			Home About us Contact

Retrospective Clinical Study (retrospective + clinical_study)

Distribution by Scientific Domains

Medical Sciences	100%

Selected Abstracts

Turned Brånemark System® Implants in Wide and Narrow Edentulous Maxillae: A Retrospective Clinical Study

CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 2 2008
Bertil Friberg DDS
ABSTRACT Background: The available jawbone volume is regarded as one of the most important factors when assessing the prognosis of oral implants in the rehabilitation of the edentulous maxilla. Purpose: The aim of the current investigation was to retrospectively evaluate and compare the outcome of implants placed in edentulous maxillae with either wide or narrow jaw shapes. The marginal bone loss and implant cumulative survival rates (CSRs) were calculated and analyzed with special reference to smoking habits. Materials and Methods: The study included 75 individuals with edentulous maxillae, of which 33 patients exhibited wide (group A) and 42 patients exhibited narrow jaw shapes (group B). A total of 506 turned Brånemark System® (Nobel Biocare AB, Göteborg, Sweden) implants were inserted (226 in group A and 279 in group B) and followed clinically up to 7 years. Smoking habits were recorded. Radiographs were obtained at connection of prostheses, and at the 1- and 5-year follow-up visit. The marginal bone loss was calculated for the groups and analyzed using t -test. Results: Twenty-eight implants were lost during the study period, revealing implant CSRs at 7 years of 94.6% (11/226) and 93.6% (17/279) for wide and narrow crests, respectively. No difference in marginal bone loss was seen between the two groups, although a trend toward more bone loss was recorded for patients with wide crests. Smoking habits were more common in group A (45%) than in group B (31%). During the first year of function, smokers lost significantly more marginal bone than nonsmokers (p = .0447), albeit this difference did not prevail (p > .05) at the end of the study period. Conclusions: The implant CSRs at 7 years were equally good for the two groups of patients with various jaw shapes. Initially, smokers showed significantly more marginal bone loss than nonsmokers. [source]

Short Implants Placed One-Stage in Maxillae and Mandibles: A Retrospective Clinical Study with 1 to 9 Years of Follow-Up

CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 1 2007
Paulo Maló DDS
ABSTRACT Background:, The use of short implants (7,8.5 mm) has historically been associated with lower survival rates than for longer implants. However, recent clinical studies indicate that short implants may support most prosthetic restorations quite adequately, but still clinical documentation is sparse. Purpose:, The purpose of this study was to report on the placement of short Brånemark implants, testing the hypothesis that short implants in atrophied jaws might give similar long-term implant survival rates as longer implants used in larger bone volumes. Materials and Methods:, This retrospective clinical study included 237 consecutively treated patients with 408 short Brånemark implants supporting 151 fixed prostheses. One hundred thirty-one of the implants were 7-mm long, and 277 were 8.5-mm long. Final abutments were delivered at the time of surgery, and final prostheses were delivered 4 to 6 months later. Results:, One hundred and twenty six of the 7-mm implants (96%) have passed the 1-year follow-up; 110 (84%), the 2-year follow-up; and 88 (67%), the 5-year follow-up. Five implants failed in four patients before the 6-month follow-up, giving a cumulative survival rate of 96.2% at 5 years. The average bone resorption was 1 mm (SD=0.6 mm) after the first year and 1.8 mm (SD=0.8 mm) after the fifth year of function. Two hundred sixty nine of the 8.5-mm implants (97%) have passed the 1-year follow-up; 220 (79%), the 2-year follow-up; and 142 (51%), the 5-year follow-up. Eight implants failed in seven patients before the 6-month follow-up, giving a cumulative survival rate of 97.1% at 5 years. The average bone resorption was 1.3 mm (SD=0.8 mm) after the first year and 2.2 mm (SD=0.9 mm) after the fifth year of function. Conclusions:, The cumulative survival rates of 96.2 and 97.1% at 5 years for implants of 7.0- and 8.5-mm length, respectively, indicate that one-stage short Brånemark implants used in both jaws is a viable concept. [source]

Short Implants in the Severely Resorbed Maxilla: A 2-Year Retrospective Clinical Study

CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 2005
Franck Renouard DDS
ABSTRACT Background: Although the predictability of endosseous dental implants is well documented, the restoration of the posterior region of the maxilla remains a challenge. The placement of short implants is one therapeutic option that reduces the need for augmentation therapy. Purpose: The purpose of this retrospective study was to assess the survival rates of 6 to 8.5 mm-long implants in the severely resorbed maxilla following a surgical protocol for optimized initial implant stability. Materials and Methods: The study included 85 patients with 96 short (6,8.5 mm) implants (Brånemark System®, Nobel Biocare AB, Göteborg, Sweden) supporting single-tooth and partial reconstructions. The implants had a machined (54) or an oxidized (TiUniteÔ, Nobel Biocare AB) (42) surface. A one-stage surgical protocol with delayed loading was used. The patients were followed for at least 2 years after loading (average follow-up period 37.6 months). The marginal bone resorption was assessed by radiographic readings. Results: Five implants were lost during the first 9 months, and four implants were lost to follow-up. The cumulative survival rate was 94.6%. Four of the failed implants had a machined surface, and one had an oxidized surface. The mean marginal bone resorption after 2 years in function was 0.44 ± 0.52 mm. Conclusion: This study demonstrates that the use of short implants maybe considered for prosthetic rehabilitation of the severely resorbed maxilla as an alternative to more complicated surgical techniques. [source]

The Marius Implant Bridge: Surgical and Prosthetic Rehabilitation for the Completely Edentulous Upper Jaw with Moderate to Severe Resorption: A 5-Year Retrospective Clinical Study

CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 2 2002
Yvan Fortin DDS
ABSTRACT Background: Patients seeking replacement of their upper denture with an implant-supported restoration are most interested in a fixed restoration. Accompanying the loss of supporting alveolar structure due to resorption is the necessity for lip support, often provided by a denture flange. Attempts to provide a fixed restoration can result in compromises to oral hygiene based on designs with ridge laps. An alternative has been an overdenture prosthesis, which provides lip support but has extensions on to the palate and considerations of patient acceptance. The Marius bridge was developed as a fixed bridge alternative offering lip support that is removable by the patient for hygiene purposes, with no palatal extension beyond normal crown-alveolar contours. Purpose: Implant-supported restorative treatment of completely edentulous upper jaws, as an alternative to a complete denture, is frequently an elective preference, and it requires significant patient acceptance beyond the functional improvement of chewing. Patients with moderate to severe bone resorption and thin ridges present additional challenges for adequate bone volume and soft-tissue contours. The purpose of this investigation was to develop a surgical and prosthetic implant treatment protocol for completely edentulous maxillae in which optimal lip support and phonetics is achieved in combination with substantial implant anchorage without bone grafting. Materials and Methods: The Marius bridge is a complete-arch, double-structure prosthesis for maxillae that is removable by the patient for oral hygiene. The first 45 consecutive patients treated by one person (YF) in one center with this concept are reported, with 245 implants followed for up to 5 years after prostheses connection. Results: The cumulative fixture survival rate for this 5-year retrospective clinical study was 97%. Five fixtures failed before loading, in five different patients, and two fixtures in the same patient failed at the 3-year follow-up visit. None of the bridges failed, giving a prostheses survival rate of 100%. The complications were few and mainly prosthetic: nine incidences of attachment component complications, one mesobar fracture, and three reports of gingivitis. All complications were solved or repaired immediately, with minimal or no interruption of prostheses use. Conclusions: Satisfactory medium-term results of survival and patient satisfaction show that the Marius bridge can be recommended for implant dentistry. The technique may reduce the need for grafting, because it allows for longer implants to be placed with improved bone anchorage and prostheses support. [source]

Retrospective clinical study of 90 avulsed permanent teeth in 58 children

DENTAL TRAUMATOLOGY, Issue 6 2008
Vasileios Tzigkounakis
We analyzed the documentations of a sample of patients containing 57 children who had a total of 90 avulsed teeth and were treated in Dentistry Department of Medical Faculty in Pilsen, Czech Republic, in the years between 1995 and 2005. We discovered that most frequently the children experience dental avulsion in the age between 8 and 11 years old, the most affected teeth are the upper central incisors and the most frequent causes are sports and games which are very common in these ages, in various environments, like schools, sport fields and home. The majority of the children were transferred to the Dentistry Department either quite long after the avulsion incident and without the avulsed teeth, or with the avulsed teeth which were carried in an inappropriate transport medium, indicating that there is insufficient knowledge of adult people, especially the ones who are in daily contact with children, on how to provide first aid in cases of dental avulsion. [source]

Retrospective Study: Cause and clinical characteristics of rib fractures in cats: 33 cases (2000,2009)

JOURNAL OF VETERINARY EMERGENCY AND CRITICAL CARE, Issue 4 2010
Christine Adams DVM
Abstract Objective , To characterize the clinical features and population differences among cats sustaining traumatic and nontraumatic rib fractures. Design , Retrospective clinical study. Setting , University small animal hospital. Animals , Thirty-three cats with radiographic evidence of rib fractures. Interventions , None. Measurements and Main Results , Cats with rib fractures were identified by performing a computer search of the radiology database. Thirty-three cats that sustained rib fractures were identified between January 2000 and September 2009. Seventeen cats had fractures due to trauma and 16 were deemed to occur from nontraumatic causes. A Mann-Whitney rank-sum test revealed statistically significant differences in the median ages between the 2 groups. Older cats were more likely to sustain rib fractures as a result of a presumed nontraumatic causes. A Chi-square analysis showed that nontraumatic fractures occurred significantly more often in the midbody region and involved the 9th,13th ribs. The majority of cats with presumed nontraumatic rib fracture had respiratory disease; the remaining cats had chronic renal disease or neoplasia. Cats with traumatic rib fractures had external signs of trauma. Conclusion , Rib fractures in cats may be clearly associated with trauma, or may be an incidental finding in cats with comorbidities. Cats with diseases that cause prolonged respiratory effort or coughing, metabolic diseases, or certain neoplasms, are at increased risk of spontaneous nontraumatic rib fractures. [source]

Administration of 5% human serum albumin in critically ill small animal patients with hypoalbuminemia: 418 dogs and 170 cats (1994,2008)

JOURNAL OF VETERINARY EMERGENCY AND CRITICAL CARE, Issue 2 2010
Fabio Viganó DVM, SCMPA
Abstract Objectives , To describe the administration of 5% human serum albumin (HSA) in 588 critically ill hypoalbuminemic dogs and cats, and report outcome to discharge, changes in albumin concentration, and adverse effects during hospitalization. Design , Retrospective clinical study. Setting , Private emergency and general veterinary center. Animals , Client-owned dogs and cats. Interventions , None. Measurements and Main Results , The medical records of 588 critically ill hypoalbuminemic animals (418 dogs and 170 cats) were reviewed. All animals had hypoalbuminemia (serum albumin <20 g/L [2.0 mg/dL]) at admission, received an infusion of 5% HSA, and received no other colloid infusion. The HSA solution was administered through a peripheral vein at 2 mL/kg/h for 10 h/d (total volume 20 mL/kg/d) until albumin reached 20 g/L. The number of days of HSA infusion (median and range) was 4 days (2,11 d) for dogs and 3 days (2,7 d) for cats. Three hundred and sixteen dogs (75.6%) survived to discharge; 56 of 418 (13.4%) died in hospital. One hundred and twenty-three cats (72.3%) survived to discharge; 21 of 170 (12.4%) died in hospital. Severe hypersensitivity reactions such as anaphylaxis, angioedema, and urticaria were not noted. Interruption of albumin infusion and specific treatment of reactions were not required in any animal. Conclusions , In this study, administration of 5% HSA appeared to be safe in a large group of critically ill, hypoalbuminemic dogs and cats. The results should be interpreted with caution due to the retrospective, descriptive nature of the study, the absence of control groups and the lack of follow-up data, as well as the potentially life-threatening complications of HSA administration. [source]

Complications of Methylprednisolone Sodium Succinate Therapy in Dachshunds with Surgically Treated Intervertebral Disc Disease

JOURNAL OF VETERINARY EMERGENCY AND CRITICAL CARE, Issue 2 2001
Amanda K. Boag MA VetMB, MRCVS;
Abstract Objective: To compare the incidence of clinically evident post-operative complications, financial cost and length of hospital stay for Dachshunds with acute intervertebral disc disease treated with decompressive surgery with and without the use of methylprednisolone sodium succinate (MPSS). Design: Retrospective clinical study Setting: Veterinary Teaching Hospital Animals: Dachshunds that presented to the Veterinary Hospital of the University of Pennsylvania between January 1994 and December 1999 with acute intervertebral disc disease that were treated with decompressive surgery. Intervention: None Measurements and Main Results: Dogs were divided into 2 groups dependent upon whether they had received MPSS. Medical records were examined for evidence of post-operative complications. Other parameters recorded included details of drugs administered (principally corticosteroids and gastrointestinal protectant drugs), length and cost of hospital stay and neurological status at 24 hours post-operatively and at suture removal. Compared to other corticosteroids, dogs receiving MPSS had a significantly higher incidence of clinically evident post-operative gastrointestinal complications, an increased use of gastrointestinal protectant drugs, and an increased cost for hospital stay (p<0.01). Conclusions: The use of MPSS inDachshunds with acute intervertebral disc disease is associated with an increased post-operative complication rate and an increased financial cost to the client. The use of MPSS should be carefully evaluated for each patient. [source]

Cartilage tympanoplasty: Indications, techniques, and outcomes in A 1,000-patient series

THE LARYNGOSCOPE, Issue 11 2003
John Dornhoffer MD
Abstract Objectives/Hypothesis: The purpose of this study was to analyze the anatomical and audiologic results in more than 1,000 cartilage tympanoplasties that utilized a logical application of several techniques for the management of the difficult ear (cholesteatoma, recurrent perforation, atelectasis). Our hypothesis was that pathology and status of the ossicular chain should dictate the technique used to achieve optimal outcome. Study Design: Retrospective clinical study of patients undergoing cartilage tympanoplasty between July 1994 and July 2001. A computerized otologic database and patient charts were used to obtain the necessary data. Methods: A modification of the perichondrium/cartilage island flap was utilized for tympanic membrane reconstruction in cases of the atelectatic ear, for high-risk perforation in the presence of an intact ossicular chain, and in association with ossiculoplasty when the malleus was absent. A modification of the palisade technique was utilized for TM reconstruction in cases of cholesteatoma and in association with ossiculoplasty when the malleus was present. Hearing results were reported using a four-frequency (500, 1,000, 2,000, 3,000 Hz) pure-tone average air-bone gap (PTA-ABG). The Student t test was used for statistical comparison. Postoperative complications were recorded. Results: During the study period, cartilage was used for TM reconstruction in more than 1,000 patients, of which 712 had sufficient data available for inclusion. Of these, 636 were available for outcomes analysis. In 220 cholesteatoma cases, the average pre- and postoperative PTA-ABGs were 26.5 ± 12.6 dB and 14.6 ± 8.8 dB, respectively (P < .05). Recurrence was seen in 8 cases (3.6%), conductive HL requiring revision in 4 (1.8%), perforation in 3 (1.4%), and postand intraoperative tube insertion in 11 (5.0%) and 18 ears (8.2%), respectively. In 215 cases of high-risk perforation, the average pre- and postoperative PTA-ABGs were 21.7 ± 13.5 dB and 11.9 ± 9.3 dB, respectively (P < .05). Complications included recurrent perforation in 9 ears (4.2%), conductive HL requiring revision in 4 (1.9%), postoperative and intraoperative tube insertion in 4 (1.9%) and 6 ears (2.8%), respectively. In 98 cases of atelectasis, the average pre- and postoperative PTA-ABGs were 20.2 ± 10.9 dB and 14.2 ± 10.2 dB, respectively (P < .05). Complications included 1 perforation (1.0%), conductive loss requiring revision in 2 cases (2.0%), and post- and intraoperative tube insertion in 7 (7.1%) and 12 ears (12%), respectively. In 103 cases to improve hearing (audiologic), the average pre- and postoperative PTA-ABGs were 33.6 ± 9.6 dB and 14.6 ± 10.1 dB, respectively (P < .05). Complications included 1 perforation (1.0%), conductive loss requiring revision in 11 (11%), and post- and intraoperative tube insertion in 6 (5.8%) and 2 (1.9%), respectively. Conclusions: Cartilage tympanoplasty achieves good anatomical and audiologic results when pathology and status of the ossicular chain dictate the technique utilized. Significant hearing improvement was realized in each pathological group. In the atelectatic ear, cartilage allowed us to reconstruct the TM with good anatomic results compared to traditional reconstructions, which have shown high rates of retraction and failure. In cholesteatoma, cartilage tympanoplasty using the palisade technique resulted in precise reconstruction of the TM and helped reduce recurrence. In cases of high-risk perforation, reconstruction with cartilage yielded anatomical and functional results that compared favorably to primary tympanoplasty using traditional techniques. We believe the indications for cartilage tympanoplasty (atelectatic ear, cholesteatoma, high-risk perforation) were validated by these results. [source]

Caecal intussusceptions in horses: a New Zealand perspective

AUSTRALIAN VETERINARY JOURNAL, Issue 7 2010
RJW Bell
Objective To establish the prevalence of intussusceptions involving the caecum in a population of horses admitted to a university hospital for colic. Design Retrospective clinical study Methods Medical records of all horses admitted to the Massey University Veterinary Teaching Hospital between 1991 and 2004 were examined for information of those horses diagnosed with an intussusception involving the caecum. Results A total of 135 horses were admitted for colic surgery during the study period and 61 horses had a diagnosis of ileocaecal (37), caecocaecal (5) or caecocolic intussusception (19) made either at surgery or necropsy. Of the horses with ileocaecal intussusception, 32 had an incomplete hand-sewn ileocaecostomy without reduction and 29 survived to discharge. All the horses with caecocaecal intussusceptions were diagnosed preoperatively via rectal examination and/or transabdominal ultrasound: 2 were euthanased at surgery and 3 survived to discharge. In the 19 horses with caecocolic intussusceptions, manually reduction at surgery was performed in 6 and 5 of them survived to discharge. A typhlectomy was performed via a colotomy in 6 horses, 3 of which survived to discharge. Conclusions The high prevalence of intussusceptions involving the caecum seen at this referral centre may indicate a higher prevalence in New Zealand than is reported elsewhere in the world. Clinical relevance Intussusceptions involving the caecum should be considered as a differential diagnosis in horses presenting with chronic low-grade colic. Transabdominal ultrasound is useful for identifying caecocaecal and caecocolic intussusceptions. Hand-sewn side-to-side incomplete ileocaecostomy is a quick, effective and safe method of surgical treatment of ileocaecal intussusceptions. [source]

Retrospective study of 108 foals with septic osteomyelitis

AUSTRALIAN VETERINARY JOURNAL, Issue 1-2 2010
KM Neil
Objective To determine the clinical characteristics, short-term outcome and future athletic performance of foals with septic osteomyelitis. Design Retrospective clinical study of 108 Thoroughbred foals with radiographic evidence of bone infection that were presented at the Scone Veterinary Hospital between August 1995 and December 2001. Medical records were reviewed and information concerning signalment, the clinical, laboratory and radiographic findings, treatment and outcome was obtained. Racing records were obtained and evaluated for surviving foals that had reached racing age. Results Mean age of foals at initial evaluation was 39 days (range 1,180 days); 21 foals had multiple radiographic bone lesions (19.4%), and 76 had concurrent septic arthritis (70.4%). The most frequently affected bones were the femur, tibia and distal phalanx. In total, 87 foals were discharged from the hospital (80.6%), 79 survived long-term to reach racing age and 52 raced (65.8%). Overall, 48% (52/108) of the foals treated for osteomyelitis raced. Foals less than 30 days of age at the time of diagnosis, critically ill foals and those with multiple bones or joints affected were significantly less likely to be discharged from hospital. Multiple septic joints, but not multiple bone involvement, had an unfavourable prognosis for racing. Conclusions The prognosis for survival of foals with septic osteomyelitis or osteitis is favourable. Multiple bone or joint involvement is an important short-term prognostic indicator; however, the involvement of multiple joints, but not multiple infected bones, is associated with an unfavourable prognosis for racing. [source]

Oral squamous cell carcinoma and cultural oral risk habits in Vietnam

INTERNATIONAL JOURNAL OF DENTAL HYGIENE, Issue 3 2010
SL Priebe
To cite this article: Int J Dent Hygiene,8, 2010; 159,168 DOI: 10.1111/j.1601-5037.2010.00461.x Priebe SL, Aleksej,nien, J, Zed C, Dharamsi S, Thinh DHQ, Hong NT, Cuc TTK, Thao NTP. Oral squamous cell carcinoma and cultural oral risk habits in Vietnam. Abstract: Objectives:, In South-Central Asia, 80% of head and neck cancers are found in the oral cavity and oropharynx. In Vietnam, oral cancer is often not being detected until people experience debilitating circumstances to normal oral function. The aims of the study were to explore the patterns of oral squamous cell carcinoma (OSCC) and its risk indicators, the structure of oral health care in Vietnam and trends in prevalence of cultural risk habits in southern Vietnamese patients. Materials and Methods:, A retrospective clinical study was performed from 1 July 2005 to 1 April 2006 at Ho Chi Minh City Oncology hospital in Vietnam. Of the 161 cases, 147 subjects were diagnosed with OSCC, including 100 male and 47 female adults aged 24,85 years. Data were collected by a structured interview and clinical examination. Results:, Over 40% of the women with OSCC reported chewing betel quid and the most prevalent risk habit in males was smoking (91.0%). Daily alcohol use was reported by 79.0% of males and 2.1% of females. Two-thirds of the cases of OSCC were diagnosed at the 2nd and 3rd stage of cancer. The more advanced stages of cancer were observed in males than in females. The prevalence of tobacco and alcohol use in males with OSCC was higher in this study than in the previous Vietnamese studies. Conclusion:, High frequency of risk habits in both genders was reported in OSCC Vietnamese patients. A trend of increased tobacco and alcohol use was observed in male OSCC patients. A lower prevalence of later staging in Vietnam was observed in this study than in earlier studies. [source]

Long-term results after excision of breast mass using a vacuum-assisted biopsy device

ANZ JOURNAL OF SURGERY, Issue 11 2009
Cha Kyong Yom
Abstract Background:, The excision of breast lesions using an ultrasound-guided vacuum-assisted biopsy device (VABD) is a widely used technique for the diagnosis and treatment of breast disease, but the results of long-term follow-up after VABD excision of benign breast tumours have not been reported. The purpose of this study was to evaluate the results of long-term follow-up after complete excision of benign breast tumours using an ultrasound-guided VABD. Methods:, This is a retrospective clinical study. Between January 2001 and December 2004, patients who had undergone VABD excision of benign breast tumours and been followed up by clinical examination and ultrasonography for 2 years or more were included. Results:, One hundred eighty-four cases representing 153 patients were studied. The median follow-up period was 33 months (range, 24,67 months). All lesions were histologically benign. The mean size of the lesions was 1.09 ± 0.57 cm (range, 0.3,3.03 cm). Within 2 years after VABD excision, residual lesions were detected in 10% of patients sonographically, but after 2 years or more, residual masses were found in 6.5% of patients. Scar changes also decreased from 36.0% to 15.8% during the period of follow-up. Finally, the benign breast tumours were completely excised without residual masses in 93.5% of the participant patients. Residual masses developed in two fibroadenoma cases (1.08%); one was re-excised and the other was followed serially. Conclusion:, Ultrasound-guided VABD excision is a minimally invasive technique for the complete removal of benign breast tumours. The results of this long-term follow-up of VABD excisions are comparable to conventional methods. [source]

Molteno aqueous shunt as a primary surgical intervention for uveitic glaucoma: long-term results

ACTA OPHTHALMOLOGICA, Issue 1 2010
Marja-Liisa Vuori
Abstract. Purpose:, To evaluate the efficacy of Molteno aqueous shunt as a primary surgical treatment in uveitic glaucoma. Methods:, Nonrandomized, interventional, retrospective clinical study. The intraocular pressure (IOP), survival rate and complications were analyzed in 30 patients with uveitic glaucoma treated with Molteno implant. Results:, The mean follow-up time was 59.3 ± 18.4 months. Preoperatively, the mean ± SD IOP was 32.8 ± 7.5 mmHg (range 20,48), and the mean number of medications was 3.1 ± 0.6. The mean IOP decreased significantly (p < 0.001) to 17.7 and 15 mmHg at 3 and 6 months postoperatively. The mean number of medications decreased statistically significantly (p < 0.001) from the preoperative number 3.1 to 1.9 three months postoperatively. The number of medications continued to decrease significantly up to 3 years postoperatively. The qualified success rate (Kaplan,Meier estimate) was 97%, 93%, 90% and 85% at 1, 2, 3 and 4 years, respectively. Two patients failed because of hypotony, two patients developed conjunctival erosion and one patient had corneal decompensation. Conclusions:, Molteno aqueous shunt as the first glaucoma procedure decreased IOP effectively in uveitic glaucoma. Even after 4 years, the survival estimate was quite high. The IOP decreased continuously during the first year after the surgery, and the medication was slowly tapered even up to 3 years postoperatively. It is suggested that it may be possible to postpone further surgical intervention during the first postoperative year after Molteno implantation even if the IOP is not quite optimal. [source]

Clinical Outcome of Overdenture Treatment on Two Nonsubmerged and Nonsplinted Astra Tech MicrothreadÔ Implants

CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 2 2009
Hugo De Bruyn DDS
ABSTRACT Background: The use of two implants for mandibular overdenture stabilization improves the patients' comfort and well-being. This treatment could be more cost-effective if surgery and prosthetic treatment could be performed by one clinician in the normal setting of a dental clinic. Purpose: The aim of this retrospective clinical study was to describe implant success, restorative outcome, and the patients' opinion of mandibular overdenture treatment on two early-loaded, nonsplinted Astra Tech TiOblast MicrothreadÔ (Astra Tech Dental, Mölndal, Sweden) implants. Materials and Methods: Thirty-seven consecutive patients treated with implant-supported mandibular overdentures were invited for a clinical examination. Implant survival, marginal bone level, quality of implant and prosthetic treatment, and the patients' opinion by means of questionnaires were scored. Results: Thirty-four patients attended the examination. Two implants were lost in one patient and the failure rate for the total group of patients was 3%. As 8 of the 33 remaining patients were still in the provisional loading stage, they were not included in the final clinical and radiographic examination. Based on 25 patients and 50 implants with a mean follow-up of 18.8 months (range 4,33), implant positioning and occlusion/articulation scored perfect in 74 to 80% of the cases. Retention of the dentures was rated perfect in 80%, but 20% needed minor activation of the attachments, 20% showed signs of abrasion, and 20% had already been repaired. The average marginal bone level was 0.8 mm below the reference point. The mean pocket depth was 2.1 mm, and 54% of the peri-implant tissues were free of bleeding. The patients were appreciative of the work carried out by their dentist and they indicated a significant improvement in their well-being and quality of life. Conclusions: It can be concluded that the Astra Tech implant system was successfully used by the general dentist both surgically and prosthetically with minimal implant failures and prosthetic complications and that this led to high levels of patient appreciation and overall satisfaction. [source]

Short Implants Placed One-Stage in Maxillae and Mandibles: A Retrospective Clinical Study with 1 to 9 Years of Follow-Up

A 3-Year Retrospective Study of Cresco Frameworks: Preload and Complications

CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 4 2005
Lars Hjalmarsson DDS
ABSTRACT Purpose: The aim of this retrospective clinical study was to evaluate the clinical outcome of fixed implant-supported complete prostheses on Astra or Brånemark implants when using either conventional cast frameworks or frameworks produced according to the Cresco Ti Precision method® (Cresco Ti Systems Sàri., Lausanne, Switzerland). Materials and Methods: Forty-six patients treated 3 years previously were divided into four groups according to implant system and framework design. Clinical examinations were performed and case records were scrutinized. The stability for each prosthesis retention screw was recorded as the torque profile and was monitored using the Osseocare® torque controller (Nobel Biocare AB, Göteborg, Sweden). Complications in association with implants and superstructures were registered. Patient opinions were recorded. The significance level was set to 5%. Results: The Astra-Cresco group demonstrated a lower degree of prosthesis retention screw stability compared with the Astra group. No differences among the four groups were seen regarding plaque, bleeding on probing, or marginal bone resorption. The Brånemark group (Brånemark System®, Nobel Biocare AB) demonstrated more mechanical complications than the Brånemark-Cresco group. Mobile prostheses were found in the Brånemark and the Astra-Cresco groups. Fracture of veneer was seen in 20% of the prostheses and was more frequently found in the groups with mobile prostheses. Sixty percent of the prostheses showed reactions in the surrounding soft tissues. The most common reaction was mucosal proliferation. No differences were detected in the patients' opinions. Conclusion: Within the limitations of this retrospective study, the following can be concluded: (1) compared with conventional frameworks, the Cresco distortion correction method does not provide a better clinical outcome after prosthesis connection in patients with fixed implant-supported complete prostheses; and (2) the two framework-producing methods behave differently on Astra implants compared with Brånemark implants concerning prosthesis retention screw stability, mechanical and biologic complications, and reactions in patients with fixed implant-supported complete prostheses. [source]

The Marius Implant Bridge: Surgical and Prosthetic Rehabilitation for the Completely Edentulous Upper Jaw with Moderate to Severe Resorption: A 5-Year Retrospective Clinical Study