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Sinus Lift (sinus + lift)
Terms modified by Sinus Lift Selected AbstractsSinus Lift Using a Nanocrystalline Hydroxyapatite Silica Gel in Severely Resorbed Maxillae: Histological Preliminary StudyCLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 2009Luigi Canullo DDS ABSTRACT Purpose: The aim of this preliminary study was to evaluate histologically a nanocrystalline hydroxyapatite silica gel in maxillary sinus floor grafting in severely resorbed maxillae. Materials and Methods: A total of 16 consecutive patients scheduled for sinus lift were recruited during this study. Patients were randomly divided in two groups, eight patients each. In both groups, preoperative residual bone level ranged between 1 and 3 mm (mean value of 2.03 mm). No membrane was used to occlude the buccal window. Second surgery was carried out after a healing period of 3 months in Group 1 and 6 months in Group 2. Using a trephine bur, one bone specimen was harvested from each augmented sinus and underwent histological and histomorphometric analysis. Results: Histological analysis showed significant new bone formation and remodeling of the grafted material. In the cores obtained at 6 months, regenerated bone, residual NanoBone, and bone marrow occupied respectively 48 ± 4.63%, 28 ± 5.33%, and 24 ± 7.23% of the grafted volume. In the specimens taken 3 months after grafting, mean new bone was 8 ± 3.34%, mean NanoBone was 45 ± 5.10%, and mean bone marrow was 47 ± 6.81% of the bioptical volume. Conclusions: Within the limits of this preliminary prospective study, it was concluded that grafting of maxillary sinus using nanostructured hydroxyapatite silica gel as only bone filler is a reliable procedure also in critical anatomic conditions and after early healing period. [source] The influence of interfering septa on the incidence of Schneiderian membrane perforations during maxillary sinus elevation surgery: a retrospective study of 52 consecutive lateral window proceduresORAL SURGERY, Issue 1 2009S. Malkinson Abstract Aim:, Sinus lifts are a predictable method of augmenting the height of bone in maxillary posterior sextants. These procedures can be complicated by anatomical factors, such as the presence of interfering bony septa in the sinus. The objectives of this study were to investigate the incidence of interfering septa in patients undergoing sinus lifts and to see if the presence of interfering septa increased the chance of intra-operative membrane perforation. Materials and methods:, This retrospective cohort study assessed presence of interfering antral septa and their effect on Schneiderian membrane elevation in 45 patients with pneumatised sinuses undergoing sinus lifts. Chart audits and radiographic assessments were performed for 52 surgeries. The sinus lift procedure followed established guidelines. Presence of septa and occurrence of perforations were noted, and when perforations occurred, they were repaired with resorbable membranes. Results:, Septa were present in 40% of cases, and were found to be ,interfering' septa in 28.8% of cases. Membrane perforation occurred in 11.5% of cases. There was no statistically significant association between the presence of interfering septa and membrane perforation. Conclusion:, With enough experience and appropriate armamentarium and technique, an operator can overcome the presence of an interfering antral septum during a sinus lift procedure such that it does not increase the chance of perforating the Schneiderian membrane during elevation. [source] Implants placed in combination with an internal sinus lift without graft material: an analysis of short-term failureJOURNAL OF CLINICAL PERIODONTOLOGY, Issue 2 2009Olaf Gabbert Abstract Aim: Investigation of the short-term survival of implants placed in combination with an internal sinus lift (ISL) without graft material. Material and Methods: Thirty-six patients received 92 screw-shaped dental implants in combination with an ISL. No bone grafts or bone substitutes were used. Forty-four patients with 77 implants in the native posterior maxilla served as controls. X-rays taken after implant placement and 6 months later were evaluated for the presence of bone gain at the apical aspect of the implants. Kaplan,Meier survival curves and Cox regression analysis were used to estimate survival curves and to isolate risk factors for implant failures. Results: Within a mean observation period of 1.2 years (minimum 9 months; maximum 3.7 years), four failures were recorded in the experimental group and two in the controls. The probability of survival was above 94% for both groups. Six,nine months after surgery, bone gain was observed in 29 out of 92 implants. Comparison of the experimental group and controls revealed no effect of ISL and membrane perforation on the probability of survival. Conclusions: Promising short-term outcomes were observed for implants with ISL without graft material; for a substantial proportion of implants, apical bone gain was observed in the first 6,9 months. [source] Sinus Lift Using a Nanocrystalline Hydroxyapatite Silica Gel in Severely Resorbed Maxillae: Histological Preliminary StudyCLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 2009Luigi Canullo DDS ABSTRACT Purpose: The aim of this preliminary study was to evaluate histologically a nanocrystalline hydroxyapatite silica gel in maxillary sinus floor grafting in severely resorbed maxillae. Materials and Methods: A total of 16 consecutive patients scheduled for sinus lift were recruited during this study. Patients were randomly divided in two groups, eight patients each. In both groups, preoperative residual bone level ranged between 1 and 3 mm (mean value of 2.03 mm). No membrane was used to occlude the buccal window. Second surgery was carried out after a healing period of 3 months in Group 1 and 6 months in Group 2. Using a trephine bur, one bone specimen was harvested from each augmented sinus and underwent histological and histomorphometric analysis. Results: Histological analysis showed significant new bone formation and remodeling of the grafted material. In the cores obtained at 6 months, regenerated bone, residual NanoBone, and bone marrow occupied respectively 48 ± 4.63%, 28 ± 5.33%, and 24 ± 7.23% of the grafted volume. In the specimens taken 3 months after grafting, mean new bone was 8 ± 3.34%, mean NanoBone was 45 ± 5.10%, and mean bone marrow was 47 ± 6.81% of the bioptical volume. Conclusions: Within the limits of this preliminary prospective study, it was concluded that grafting of maxillary sinus using nanostructured hydroxyapatite silica gel as only bone filler is a reliable procedure also in critical anatomic conditions and after early healing period. [source] RFA Values of Implants Placed in Sinus Grafted and Nongrafted Sites after 6 and 12 MonthsCLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, Issue 3 2009Marco Degidi MD ABSTRACT Background: Maxillary sinus floor elevation surgery is widely used as a preimplantology method to permit implant insertion. Nevertheless, very few data are available about long-term stability of dental implants inserted in grafted sites. Purpose: The aims of the present study were to evaluate the evolution of resonance frequency analysis (RFA) values at 6 and 12 months from the implant insertion in sinus grafted sites and nongrafted sites. Materials and Methods: In 14 patients, 80 Xive implants (Dentsply Friadent GmbH, Mannheim, Germany) were inserted. Sixty-three implants were inserted in a site previously treated with a sinus lift; 17 implants were inserted in healed or postextraction sites. For each implant diameter, length, bone density, insertion torque, and percentage of implant fixed to a nongrafted bone were recorded. RFA values at implant insertion after 6 and 12 months were recorded. Results: After 6 and 12 months, grafted sites showed higher RFA values than the control sites; after 12 months, the difference was statistically significant (.007). A statistically significant positive correlation was found between resonance frequency values and bone quality after 12 months (.05). No statistically significant correlation between RFA values and all the other variables considered was found. Conclusions: Sites treated with sinus lift can offer good long-term stability. After 6 and 12 months, the geometric characteristics of the implant are no longer important to obtain high RFA values, and the bone,implant interface seems to be determinant. [source] Dental implants placement in conjunction with osteotome sinus floor elevation: a 12-year life-table analysis from a prospective study on 588 ITI®implantsCLINICAL ORAL IMPLANTS RESEARCH, Issue 2 2006Nicola Ferrigno Abstract Objectives: The purpose of this prospective study was to evaluate the clinical success of placing ITI dental implants in the posterior maxilla using the osteotome technique. Material and methods: All implants were placed following a one-stage protocol (elevating the sinus floor and placing the implant at the same time). Five hundred and eighty-eight implants were placed in 323 consecutive patients with a residual vertical height of bone under the sinus ranging from 6 to 9 mm. The mean observation follow-up period was 59.7 months (with a range of 12,144 months). This prospective study not only calculated the 12-year cumulative survival and success rates for 588 implants by life-table analysis but also the cumulative success rates for implant subgroups divided per implant length and the percentage of sinus membrane perforation were evaluated. Results: The 12-year cumulative survival and success rates were 94.8% and 90.8%, respectively. The analysis of implant subgroups showed slightly more favourable cumulative success rates for 12 mm long implants (93.4%) compared with 10 and 8 mm long implants (90.5% and 88.9%, respectively). During the study period, only 13 perforations of the Schneiderian membrane were detected with a perforation rate of 2.2% (13 perforations/601 treated sites). Ten perforations out of 13 were caused during the first half of the study period and of these, seven were detected during the first 3 years of this prospective study. Conclusion: Based on the results and within the limits of the present study, it can be concluded that ITI implant placement in conjunction with osteotome sinus floor elevation represents a safe modality of treating the posterior maxilla in areas with reduced bone height subjacent to the sinus as survival and success rates were maintained above 90% for a mean observation period of ,60 months. Shorter implants (8 mm implants) did not significantly fail more than longer ones (10 and 12 mm implants): the differences were small compared with the number of events; hence, no statistical conclusion could be drawn. But, from the clinical point of view, the predictable use of short implants in conjunction with osteotome sinus floor elevation may reduce the indication for complex invasive procedures like sinus lift and bone grafting procedures. [source] A 7-year life table analysis from a prospective study on ITI implants with special emphasis on the use of short implantsCLINICAL ORAL IMPLANTS RESEARCH, Issue 2 2004Results from a private practice Abstract: This paper reports on a 7-year life table analysis on ITI titanium plasma-sprayed (TPS) and sandblasted and etched (SLA) implants placed in a private practice and loaded for at least 1 year. In 236 patients, 528 (264 TPS and 264 SLA) implants were placed, 351 (66.5%) implants rehabilitated the posterior region and 71.1% implants were ,11 mm. In the posterior mandible and maxilla, the mean implant length was 9.90 and 9.74 mm respectively. Implant length was determined through standard radiographs only. Increase of the number of implants or reduction of the width or the length of the rehabilitations was not specifically sought for the shorter implants. One hundred and twenty-two SLA implants were loaded within 63 days. All early loaded SLA implants resisted the applied 35 N cm without rotation or pain. Three implants failed, one early and two late failures, all were SLA implants placed in the mandible. Shorter implants did not fail more than longer ones. The cumulative success rate was 99.40%. The predictable use of short implants supporting single crowns and small fixed partial dentures of 2,4 units supported by two to three implants permitted (1) restricting the need for sophisticated and expensive presurgical procedures aimed to determine precisely the available bone height by computerized radiographic methods, (2) the placement of prosthetically driven restoration instead of surgically driven ones, (3) reducing the indications span for complex invasive procedures like sinus lift and bone grafting procedures, (4) facilitating the surgery, without attempting to place the longest implant and (5) avoiding the occurrence of sensation disturbance. The safe use of short implants in a private practice should make implant therapy simpler and accessible to a higher number of patients and practitioners. Résumé Ce manuscript rapporte une analyse sur sept ans d'implants ITI® TPS et SLA placés dans un cabinet privé et chargés pendant au moins une année. Chez 236 patients, 528 implants (264 TPS et 264 SLA) ont été placés, 351 (66,5%) d'entre eux pour reconstruire la région postérieure et 71,1 étaient ,11 mm. Dans les parties postérieures de la mandibule et du maxillaire la longueur implantaire moyenne était respectivement de 9,90 et 9,74 mm. La longueur de l'implant était déterminée à partir uniquement de radiographies standards. L'augmentation du nombre d'implants ou la réduction de la largeur ou la longueur des reconstructions n'étaient pas spécifiquement recherchées pour les implants les plus courts. Cent vingt-deux implants SLA ont été mis en charge avant 63 jours. Tous les implants SLA avec mise en charge précoce ont resistéà la force de 35 Ncm appliquée sans rotation ni douleur. Trois implants ont échoué: 1) de manière précoce et 2) plus tard, tous étaient des implants SLA placés dans la mandibule. Les implants les plus courts n'avaient pas davantage d'échec que les plus longs. Le taux de succès cumulatif était de 99,40%. L'utilisation prévisible des implants courts portant des couronnes uniques et des petites prothèses fixées de deux à quatre unités supportées par deux à trois implants permettait 1) de réduire la nécessité de processus préchirurgicaux sophistiqué et cher visant ,a d"terminer précisemnentla hauteur osseuse disponible par des méthodes radiographiques avec ordinateur, 2) le placement de restaurations axées sur la prothèse plutôt que sur la chirurgie, 3) de diminuer la portée des indications des processus invasifs complexes comme l'épaississement du plancher buccal et les processus de greffe osseuse, 4) de faciliter la chirurgie sans essayer de placer l'implant le plus long, 5) d'éviter l'apparition de troubles de sensation. L'utilisation s,re d'implants court dans une pratique privée pourrait rendre la thérapie plus simple et accessible à un polus grand nombre de patients et de praticiens. Zusammenfassung Diese Arbeit berichtet über eine 7 Jahre Life Time Analyse von ITI TPS und SLA Implantaten, welche in einer Privatpraxis gesetzt wurden und für mindestens 1 Jahr unter Belastung standen. Bei 236 Patienten wurden 528 Implantate (264 TPS und 264 SLA) eingesetzt, 351 Implantate (66.5%) dienten der Wiederherstellung der posterioren Region und 71.1% der Implantate waren 11 mm lang. In der posterioren Mandibula bzw. Maxilla betrug die mittlere Implantatlänge 9.9 bzw. 9.74 mm. Die Implantatlänge wurde nur auf Standardröntgenbildern bestimmt. Bei Rekonstruktionen mit kurzen Implantaten wurden nicht speziell mehr Implantate verwendet oder die Breite oder die Länge der Rekonstruktionen reduziert. 122 SLA Implantate wurden innerhalb von 63 Tagen belastet. Alle frühbelasteten SLA Implantate widerstanden den applizierten 35Ncm ohne Rotation oder Schmerzen. 3 Implantate zeigten Misserfolge, einen Früh- und 2 Spätmisserfolge. Es handelte sich dabei ausschliesslich um SLA Implantate, welche im Unterkiefer eingesetzt worden waren. Kurze Implantate zeigten nicht mehr Misserfolge als lange. Die kumulative Erfolgsrate betrug 99.4%. Die Verwendung von kurzen Implantaten, welche Einzelkronen und kleine festsitzende Brücken mit 2,4 Einheiten auf 2,3 Implantanten trugen, erlaubte, 1) die Notwendigkeit von komplizierten und teuren prächirurgischen Abklärungen zur genauen Bestimmung der zur Verfügung stehenden Knochenhöhe durch computerisierte radiologische Methoden zu beschränken, 2) die Platzierung von prothetisch diktierten Rekonstruktionen anstelle von chirurgisch diktierten Rekonstruktionen, 3) eine Reduktion der Indikationsbreite von komplexen invasiven Prozeduren wie Sinuslift und Knochentransplantationen, 4) eine Erleichterung der Chirurgie indem nicht ein möglichst langes Implantat gesetzt werden musste, 5) das Auftreten von Sensibilitätsstörungen zu vermeiden. Die sichere Verwendung von kurzen Implantaten in einer Privatpraxis sollte die Implantattherapie einfacher machen. Dadurch sollte die Behandlung mit Implantaten einer grösseren Anzahl Patienten und Praktikern zugänglich werden. Resumen Este estudio informa sobre un análisis de un cuadro de vida de implantes ITI TPS y SLA colocados en una consulta privada y cargados durante al menos un año. Se colocaron 528 implantes (264 TPS y 264 SLA) en 236 pacientes, 351 implantes (66.5%) rehabilitaron el maxilar posterior y el 71.1% de los implantes fueron ,11 mm. La longitud media de los implantes en la mandíbula posterior y el maxilar fue de 9,90 y 9.74 mm respectivamente. La longitud del implante se determinó solamente a través de radiografías. No se buscaron específicamente incrementos en el número de implantes o reducción en la anchura o longitud de las rehabilitaciones para los implantes cortos. Se cargaron 122 implantes dentro de los 63 días. Todos los implantes SLA cargados tempranamente resistieron la fuerza de 35 Ncm aplicada sin rotación ni dolor. 3 implantes fracasaron, uno tempranamente y 2 tardíos, todos fueron implantes SLA colocados en la mandíbula. Los implantes mas cortos no fracasaron más que los implantes largos. El índice acumulativo de éxito fue del 99.4%. El uso predecible de implantes cortos soportando coronas unitarias y pequeñas prótesis fijas parciales de 2,4 unidades soportadas por 2,3 implantes permitieron, 1) restringir la necesidad de procedimientos quirúrgicos sofisticados y costosos con la intención de determinar con precisión la altura de hueso disponible por medio de métodos de radiografías computarizadas, 2) la colocación de restauraciones orientadas prosteticamente en vez de quirúrgicamente, 3) reducir el abanico de indicaciones para procedimientos complejos invasivos tales como procedimientos de elevación del seno e injertos, 4) facilitar la cirugía, sin intentar colocar el implante mas largo, 5) evitar la aparición de sensación de molestia. El uso seguro de implantes cortos en una consulta privada debería hacer el tratamiento de implantes mas simple y accesible para un mayor número de pacientes y profesionales. [source] The influence of interfering septa on the incidence of Schneiderian membrane perforations during maxillary sinus elevation surgery: a retrospective study of 52 consecutive lateral window proceduresORAL SURGERY, Issue 1 2009S. Malkinson Abstract Aim:, Sinus lifts are a predictable method of augmenting the height of bone in maxillary posterior sextants. These procedures can be complicated by anatomical factors, such as the presence of interfering bony septa in the sinus. The objectives of this study were to investigate the incidence of interfering septa in patients undergoing sinus lifts and to see if the presence of interfering septa increased the chance of intra-operative membrane perforation. Materials and methods:, This retrospective cohort study assessed presence of interfering antral septa and their effect on Schneiderian membrane elevation in 45 patients with pneumatised sinuses undergoing sinus lifts. Chart audits and radiographic assessments were performed for 52 surgeries. The sinus lift procedure followed established guidelines. Presence of septa and occurrence of perforations were noted, and when perforations occurred, they were repaired with resorbable membranes. Results:, Septa were present in 40% of cases, and were found to be ,interfering' septa in 28.8% of cases. Membrane perforation occurred in 11.5% of cases. There was no statistically significant association between the presence of interfering septa and membrane perforation. Conclusion:, With enough experience and appropriate armamentarium and technique, an operator can overcome the presence of an interfering antral septum during a sinus lift procedure such that it does not increase the chance of perforating the Schneiderian membrane during elevation. [source] | ||||||||||