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Biological Complications (biological + complications)

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Medical Sciences	100%

Selected Abstracts

A systematic review of the survival and complication rates of resin-bonded bridges after an observation period of at least 5 years

CLINICAL ORAL IMPLANTS RESEARCH, Issue 2 2008
Bjarni E. Pjetursson
Abstract Objectives: The objectives of this systematic review were to assess the 5-year survival of resin-bonded bridges (RBBs) and to describe the incidence of technical and biological complications. Methods: An electronic Medline search complemented by manual searching was conducted to identify prospective and retrospective cohort studies on RBBs with a mean follow-up time of at least 5 years. Patients had to have been examined clinically at the follow-up visit. Assessment of the identified studies and data extraction were performed independently by two reviewers. Failure and complication rates were analyzed using random-effects Poissons regression models to obtain summary estimates of 5-year proportions. Results: The search provided 6110 titles and 214 abstracts. Full-text analysis was performed for 93 articles, resulting in 17 studies that met the inclusion criteria. Meta-analysis of these studies indicated an estimated survival of RBBs of 87.7% (95% confidence interval (CI): 81.6,91.9%) after 5 years. The most frequent complication was debonding (loss of retention), which occurred in 19.2% (95% CI: 13.8,26.3%) of RBBs over an observation period of 5 years. The annual debonding rate for RBBs placed on posterior teeth (5.03%) tended to be higher than that for anterior-placed RBBs (3.05%). This difference, however, did not reach statistical significance (P=0.157). Biological complications, like caries on abutments and RBBs lost due to periodontitis, occurred in 1.5% of abutments and 2.1% of RBBs, respectively. Conclusion: Despite the high survival rate of RBBs, technical complications like debonding are frequent. This in turn means that a substantial amount of extra chair time may be needed following the incorporation of RBBs. There is thus an urgent need for studies with a follow-up time of 10 years or more, to evaluate the long-term outcomes. [source]

Survival probability of zirconia-based fixed dental prostheses up to 5 yr: a systematic review of the literature

EUROPEAN JOURNAL OF ORAL SCIENCES, Issue 5 2010
Jaana-Sophia Schley
Schley J-S, Heussen N, Reich S, Fischer J, Haselhuhn K, Wolfart S. Survival probability of zirconia-based fixed dental prostheses up to 5 yr: a systematic review of the literature. Eur J Oral Sci 2010; 118: 443,450. © 2010 Eur J Oral Sci The purpose of this systematic review was to calculate the 5-yr survival rates of all-ceramic zirconia-based fixed dental prostheses (FDPs) and to analyze technical and biological complications. An electronic literature search of MEDLINE (PubMed) was conducted independently by three reviewers to identify clinical studies from 1999 to 2009 and was completed by a manual search. Keywords and inclusion and exclusion criteria were well-defined. The search revealed 399 titles and led to the final analysis of 18 full-text articles. Nine studies met the inclusion criteria. Extracted data were statistically calculated into 5-yr survival rates and 5-yr complication-free rates by using Poisson regression analysis. In total, 310, 3- to 4-unit FDPs and 20 FDPs with more than 4 units were included. The estimated 5-yr survival rate for all FDPs was 94.29% (95% CI: 58.98,99.32); 19 FDPs were lost as a result of catastrophic failures. The 5-yr complication-free rate regarding technical complications was 76.41% (95% CI: 42.42,91.60) with chipping being the most frequent complication. Regarding biological complications, the 5-yr complication-free rate was 91.72% (95% CI: 59.19,98.53). The survival rates of zirconia-based short-unit FDPs are promising. However, an important improvement of the veneering systems is required, and for FDPs with more units in function, further randomized, controlled clinical trials are necessary. [source]

Pulp revascularization of necrotic bilateral bicuspids using a modified novel technique to eliminate potential coronal discolouration: a case report

INTERNATIONAL ENDODONTIC JOURNAL, Issue 1 2009
K. Reynolds
Abstract Aim, To present a case report in which the pulp of two bilateral mandibular premolars with dens evaginatus were revascularized using a modified novel technique to avoid undesired crown discolouration. Summary, Recently, regeneration of necrotic pulps has become an alternative conservative treatment option for young permanent teeth with immature roots and is a subject of great interest in the field of endodontics. This novel procedure exploits the full potential of the pulp for dentine deposition and produces a stronger mature root that is better able to withstand the forces than can result in fracture. However, the current protocol has potential clinical and biological complications. Amongst them, crown discolouration, development of resistant bacterial strains and allergic reaction to the intracanal medication. In the case presented, a modified technique to avoid undesired crown discolouration was applied sealing the dentinal tubules of the chamber, thus avoiding any contact between the tri-antibiotic paste and the dentinal walls. Key learning points, ,,Sealing the dentinal tubules of the chamber prevents the undesirable crown discolouration produced by tri-antibiotic medication whilst maintaining the revascularization potential of the pulp. ,,Further research is warranted to seek an alternative infection control protocol capable of preventing possible allergic reactions and development of resistant strains of bacteria, as well as a biological material capable of inducing angiogenesis and allow a more predictable scaffold and tissue regeneration. [source]

Long-term outcomes for cross-arch stabilizing bridges in periodontal maintenance patients , a retrospective study

JOURNAL OF CLINICAL PERIODONTOLOGY, Issue 3 2010
Øystein Fardal
Fardal Ø, Linden GJ. Long-term outcomes for cross-arch stabilizing bridges in periodontal maintenance patients , a retrospective study. J Clin Periodontol 2010; 37: 299,304. doi: 10.1111/j.1600-051X.2009.01528.x. Abstract Background: Cross-arch bridges are used to stabilize teeth for patients with reduced periodontal support. Little is known about technical or biological complications, whether teeth and implants can be combined in this type of bridge and the long-term effects on tooth loss. Materials and methods: All patients treated in a specialist periodontal practice who received cross-arch stabilizing bridgework and were subsequently maintained for at least 7 years were included in the study. The patients were selected from all patients who underwent initial periodontal therapy after 1986 in a Norwegian periodontal practice. The bridges were assessed for biological and technical complications. Bridges retained by teeth or by a combination of teeth and implants were included in the study. Results: Ninety-four rigid fixed bridges (77 teeth supported, 17 teeth and implant supported) in 80 patients (46 females, 34 males) were observed for an average of 10 years (range 7,22 years). In four patients, a bridge became loose and had to be re-cemented, and in one case the metal framework of a bridge fractured and the bridge had to be remade. In total, eight abutment teeth were lost from five patients but no implant abutments were lost. Overall, a higher rate of tooth loss was observed for patients provided with stabilizing bridges compared with control maintenance patients not treated with bridgework (p<0.0001); however, the rates in both groups were very low. Conclusion: Cross-arch stabilizing bridges constructed for periodontal patients as part of their periodontal maintenance therapy had few complications and were associated with low rates of abutment tooth loss. Combining teeth and implants did not affect the performance of these bridges. [source]

A systematic review of the survival and complication rates of implant supported fixed dental prostheses with cantilever extensions after an observation period of at least 5 years

CLINICAL ORAL IMPLANTS RESEARCH, Issue 5 2009
Marco Aglietta
Abstract Objective: The aim of this systematic review was to assess the survival rates of short-span implant-supported cantilever fixed dental prostheses (ICFDPs) and the incidence of technical and biological complications after an observation period of at least 5 years. Material and methods: An electronic MEDLINE search supplemented by manual searching was conducted to identify prospective or retrospective cohort studies reporting data of at least 5 years on ICFDPs. Five- and 10-year estimates for failure and complication rates were calculated using standard or random-effect Poisson regression analysis. Results: The five studies eligible for the meta-analysis yielded an estimated 5- and 10-year ICFDP cumulative survival rate of 94.3% [95 percent confidence interval (95% CI): 84.1,98%] and 88.9% (95% CI: 70.8,96.1%), respectively. Five-year estimates for peri-implantitis were 5.4% (95% CI: 2,14.2%) and 9.4% (95% CI: 3.3,25.4%) at implant and prosthesis levels, respectively. Veneer fracture (5-year estimate: 10.3%; 95% CI: 3.9,26.6%) and screw loosening (5-year estimate: 8.2%; 95% CI: 3.9,17%) represented the most common complications, followed by loss of retention (5-year estimate: 5.7%; 95% CI: 1.9,16.5%) and abutment/screw fracture (5-year estimate: 2.1%; 95% CI: 0.9,5.1%). Implant fracture was rare (5-year estimate: 1.3%; 95% CI: 0.2,8.3%); no framework fracture was reported. Radiographic bone level changes did not yield statistically significant differences either at the prosthesis or at the implant levels when comparing ICFDPs with short-span implant-supported end-abutment fixed dental prostheses. Conclusions: ICFDPs represent a valid treatment modality; no detrimental effects can be expected on bone levels due to the presence of a cantilever extension per se. [source]

A systematic review of the survival and complication rates of resin-bonded bridges after an observation period of at least 5 years

Factors influencing survival of reconstructions.

CLINICAL ORAL IMPLANTS RESEARCH, Issue 2007
Consensus report of Working Group
Abstract: In order to evaluate the level of evidence of factors influencing the survival of reconstructions, systematic reviews of the relevant literature were prepared by a group of rapporteurs. The review papers were circulated to the members of the group before the conference and formed the basis for group and panel discussions. Subsequently, modifications were added to the review papers, and suggestions for consensus statements concerning the following topics were prepared and again critically reviewed in the group and in the plenum: Impact of (i) periodontal disease on the survival of tooth-supported reconstructions, (ii) post-surgical factors as supportive therapy on the survival of implant supported reconstructions, (iii) technical and/or biological complications on the survival of different types of reconstructions, (iiii) material choice for reconstructions on the survival of single crowns and fixed dental prostheses. [source]

Impact of IL-1 genotype and smoking status on the prognosis of osseointegrated implants

CLINICAL ORAL IMPLANTS RESEARCH, Issue 4 2004
Boris Gruica
Abstract Aim: This study evaluated the impact of the IL-1 genotype and smoking status on the prognosis and development of complications of osseointegrated implants. Material and methods: The clinical charts of 180 consecutively admitted patients were analyzed with respect to the occurrence of biological complications in conjunction with oral implants. Biologic complications were defined as clinical conditions with suppuration from the peri-implant sulcus, development of a fistula or peri-implantitis with radiologic bone loss. All patients had received one or more ITI® dental implants, which had been in function for at least 8 (range: 8,15) years. This patient population had received 292 implants. From these, 51 implants in 34 patients showed late (infectious) biologic complications, and 241 implants had survived without any biologic complications at all. Results: Of the 180 patients, 53 were smokers, who were subdivided in a series of classes according to their intensity of smoking and 127 were never smokers. Sixty-four of 180 (36%) patients tested positive for the IL-1 genotype polymorphism. This prevalence corresponds to previous reports for the prevalence of European descent populations. The results for the non-smoking group indicated no significant correlation between implant complications and a positive IL-1 genotype. However, there was a clear association for heavy smokers between a positive IL-1 genotype and implant complications. 6 of 12 or half of the heavy smokers and IL-1 genotype-positive patients had either an implant failure, i.e. loss of implant, or a biologic complication during the follow-up period. Conclusions: These findings have led to the conclusion that there is a synergistic effect between a positive IL-1 genotype and smoking that puts dental implants at a significantly higher risk of developing biologic complications during function. Résumé Le but de cette étude a été d'évaluer l'impact du génotype IL-1 du tabagisme sur le pronostic et le développement de complication des implants buccaux ostéoïntégrés. Les dossiers cliniques de 180 patients ont été analysés en ce qui concerne l'arrivée de complications biologiques en association avec les implants buccaux. Des complications biologiques étaient définies en tant que conditions cliniques avec suppuration depuis le sillon paroïmplantaire, le développement d'une fistule ou d'une paroïmplantite avec perte osseuse radiologique. Tous les patients avait reçu un ou plusieurs implants buccaux ITI qui avaient été en fonction pour au moins huit années (de 8 à 15 ans). Les patients avaient reçu 292 implants. Parmi ceux-ci 51 chez 34 patients ont montré des complications biologiques tardives (infectieuses) et 241 avaient survécu sans aucune complication biologique. Des 180 patients, 53 étaient fumeurs qui ont été divisés en une série de classes suivant l'intensité du tabagisme tandis que 127 étaient non-fumeurs. Soixante-quatre des 180 patients (36%) ont été testés positifs pour le polymorphisme du génotype IL-1. Cette fréquence globale correspond au rapport précédent pour la fréquence globale des populations européennes. Les résultats pour le groupe non-fumeur indiquait qu'il n'y avait aucune relation significative entre les complications implantaires et un génotype IL-1 positif. Cependant, il y avait une association évidente pour les gros fumeurs entre le génotype IL-1 positif et des complications implantaires. Six des douze soit la moitié des gros fumeurs et des patients au génotype IL-1 positif avaient soit un échec implantaire (c.-à-d. la perte de l'implant) soit une complication biologique durant le suivi. Ces résultats ont conduit à la conclusion qu'il y a un effet synergétique entre le génotype IL-1 positif et le tabagisme mettant les implants buccaux à un risque beaucoup plus important à développer des complications biologiques durant leur mise en fonction. Zusammenfassung Ziel: Diese Studie untersuchte den Einfluss des IL-1 Genotyps und der Rauchgewohnheiten auf die Prognose und auf die Entwicklung von Komplikationen bei osseointegrierten Implantaten. Material und Methoden: Die Krankengeschichten von 180 aufgenommenen Patienten wurden auf biologische Komplikationen in Zusammenhang mit Zahni Implantaten untersucht. Biologische Komplikationen wurden definiert als klinische Zustände mit Suppuration aus dem periimplantären Sulcus, Entwicklung einer Fistel oder Periimplantitis mit radiologischem Knochenverlust. Alle Patienten waren mit einem oder mehreren ITI® Implantaten versorgt worden, welche für mindestens 8 Jahre (Bandbreite: 8,15 Jahre) in Funktion standen. Diese Patientenpopulation war mit 292 Implantaten versorgt worden. Von diesen 292 Implantaten zeigten 51 Implantate bei 34 Patienten biologische (infektiöse) komplikationen und 241 Implantate hatten ohne biologische Komplikationen überlebt. Resultate: Von den 180 Patienten waren 53 Raucher, welche in Untergruppen gemäss Schweregrad des Rauchens aufgeteilt wurden und 127 waren Nicht-Raucher. 64 der 180 Patienten (36%) zeigten ein positives Testergebnis bezüglich IL-1 Genotyp Polymorphismus. Diese Prävalenz entspricht früheren Berichten über die Prävalenz bei einer Population europäischer Abstammung. Die Resultate der Nicht-Raucher Gruppe zeigten keine signifikanten Korrelationen zwischen Implantatkomplikationen und einem positiven IL-1 Genotyp. Jedoch bestand bei den starken Rauchern eine klare Assoziation zwischen dem positiven IL-1 Genotyp und Implantatkomplikationen. 6 von 12 oder die Hälfte der starken Raucher und IL-1 Genotyp positiven Patienten zeigten entweder einen Implantat Misserfolg, z.B. Verlust des Implantats, oder eine biologische Komplikation während der Beobachtungsperiode. Schlussfolgerung: Die Ergebnisse haben zur Schlussfolgerung geführt, dass ein synergistischer Effekt zwischen einem IL-1 positiven Genotyp und Rauchen besteht, welcher Zahni Implantate einem signifikant höheren Risiko für die Entwicklung von biologischen Misserfolgen während der Funktion aussetzt. Resumen Intención: Este estudio evaluó el impacto del genotipo IL-1 y el estatus de fumador en el pronóstico y desarrollo de complicaciones de implantes orales osteointegrados. Material y métodos: Se analizaron las historias clínicas de 180 pacientes admitidos consecutivamente en lo referente a la ocurrencia de complicaciones biológicas en conjunción implantes orales. Se definieron las complicaciones orales como condiciones clínicas con supuración del surco periimplantario, desarrollo de una fístula o de periimplantitis con pérdida radiológica de hueso. Todos los pacientes recibieron uno o mas implantes orales ITI®, que levaban al menos 8 (rango 8,15) años en función. Esta población de pacientes recibió 292 implantes orales. De estos, 51 implantes de 34 pacientes mostraron (infecciones) complicaciones biológicas tardías, y 241 implantes sobrevivieron sin ninguna complicación biológica. Resultados: De los 180 pacientes, 53 eran fumadores que se subdividieron en una serie de categorías de acuerdo con su intensidad de consumo de tabaco y 127 nunca fueron fumadores. 64 de 180 (36%) dieron positivo al test del polimorfismo genético de la IL-1. Esta prevalencia corresponde con informes previos de prevalencia en poblaciones de origen europeo. Los resultados para el grupo de los no fumadores no indicó relación significativa entre complicaciones de los implantes y genotipo IL-1 positivo. Sin embargo, hubo una asociación clara para los fumadores intensos entre complicaciones de los implantes y un genotipo IL-1 positivo. 6 de 12 o la mitad de los fumadores intensos y los pacientes genotipo IL-1 positivo tuvieron o fracaso del implante i.e. pérdida del implante o una complicación biológica durante el periodo de seguimiento. Conclusiones: Estos hallazgos nos han conducido a la conclusión de que hay un efecto sinérgico entre genotipo IL-1 positivo y tabaquismo que colocan a los implantes orales en un riesgo significativamente mas alto para desarrollar complicaciones biológicas durante la función. [source]

Effect of implant design on survival and success rates of titanium oral implants: a 10-year prospective cohort study of the ITI® Dental Implant System

CLINICAL ORAL IMPLANTS RESEARCH, Issue 1 2004
Ioannis K. Karoussis
Abstract Aim: The aim of this 10-year study (observation time 8,12 years, mean: 10 years) was to compare the survival rates, success rates and incidences of biological complications using three different implant designs of the ITI® Dental Implant System. Material and methods: In 89 dental patients treated comprehensively, a total of 112 hollow screw (HS), 49 hollow cylinder (HC) and 18 angulated hollow cylinder (AHC) implants were installed depending on the available bone volume and according to prosthetic needs. One and 10 years after surgical placement, clinical and radiographic parameters were assessed. The incidences of peri-implantitis according to various thresholds were registered over 10 years of maintenance. Results: Success criteria at 10 years were set at: pocket probing depth (PPD)5 mm, bleeding on probing (BoP),, bone loss < 0.2 mm annually. The survival rate for HS was 95.4%, for HC 85.7% and for AHC 91.7%. Ninety percent of all the HS, 71% of the HC and 88% of the AHC did not present with an incidence of peri-implantitis over the 10 years, HC having significantly higher incidence of peri-implantitis than HS (P< 0.004). With the success criteria set above, a success rate for HS of 74%, for HC of 63% and for AHC of 61% was identified at 10 years. However, including a definition of PPD6 mm, BoP , and bone loss < 0.2 mm annually for success, the rates for HS were 78%, for HC 65% and for AHC 67%, respectively. Basing success criteria purely on clinical parameters (without radiographic analysis), such as: PPD5 mm and BoP,, the success rates increased to 90%, 76% and 89%, respectively. With PPD6 mm and BoP , as success criteria chosen, the respective rates were 94%, 82% and 94% for HS, HC and AHC implants, respectively. Conclusions: A significantly higher survival rate as well as a significantly lower incidence of peri-implantitis was identified for hollow screw design ITI® Dental Implants after 10 years of service when compared to hollow cylinder design ITI® Dental Implants (95.4% vs. 85.7%; 10% vs. 29%). Depending on the setting of the threshold criteria for success, success rates are highly variable and hence, reporting of success rates with elaboration on the criteria set appears crucial for comparison of different studies. Résumé Le but de ce suivi d'une décennie a été de comparer les taux de survie, les taux de succès et les incidences des complications biologiques de l'utilisation de trois modèles implantaires différents du système ITI® Dental Implant. Chez 89 patients, 112 vis creuses (HS), 49 cylindres creux (HC) et 18 cylindres creux angulés (AHC) ont été placés suivant le volume osseux disponible et les nécessités prothétiques. Une et dix années après leur placement, des paramètres cliniques et radiographiques ont été définis. Les incidences de paroïmplantite relatives aux différents seuils ont été enregistrées durant ces dix années de maintenance. Les succès des critères à dix ans étaient placés à : PPD5 mm, BoP-, perte osseuse <0,2 mm/an. Le taux de survie pour HS était de 95,4%, pour HC de 86% et pour AHC de 92%. Nonante pour cent de tous les HS, 71% des HC et 88% des AHC ne présentaient pas d'incidences de paroïmplantite durant ces dix années, HC ayant une plus importante incidence de paroïmplantite que HS (p<0,004). Grace aux critères de succès indiqués, un taux de succès de 74% pour HS, de 63% pour HC et de 61% pour AHC a été identifié après dix ans. Cependant, en définissant le succès avec PPD6mm, BoP- et perte osseuse <0,2mm/an, les taux étaient de 78% pour HS, de 65% pour HC et de 67% pour AHC. En basant les taux de succès uniquement sur les paramètres cliniques (sans l'analyse radiographique) tels que PPD5 mm et BoP-, les taux de succès augmentaient respectivement à 90, 76 et 89%. Avec PPD6mm et BoP- comme critères de succès, les taux s'élevaient respectivement à 94, 82 et 94%. Un taux de survie significativement plus important ainsi qu'une incidence significativement plus faible de paroïmplantite étaient constatés au niveau des implants vis creuses après dix ans de mise en fonction comparés aux cylindres creux. Suivant l'établissement du seuil pour les critères du succès, les taux de ce succès sont extrêmement variables et rapporter les taux de succès suivant l'élaboration des critères est donc crucial pour comparer différentes études. Zusammenfassung Ziel: Das Ziel dieser 10-Jahresstudie (Beobachtungszeit 8,12 Jahre, Mittelwert: 10 Jahre) war es, bei ITI® -Implantaten mit drei verschiedenen Designs, die Erfolgs- und Überlebensrate zu vergleichen, und das Auftreten von biologischen Zwischenfällen zu untersuchen. Material und Methode: Bei 89 synoptisch behandelten Patienten implantierte man in Abhängigkeit des vorhandenen Knochenvolumens und der prothetischen Anforderungen insgesamt 112 Hohlschraubenimplantate (HS), 49 Hohlzylinderimplantate (HC) und 18 abgewinkelte Hohlzylinderimplantate (AHC). Ein und zehn Jahre nach der Implantation nahm man die klinischen und radiologischen Parameter auf. Eine Periimplantitis registrierte während der 10-jährigen Erhaltungsphase anhand verschiedener Grenzwerte. Resultate: Die Kriterien für einen Erfolg nach 10 Jahren legte man bei den folgenden Werten fest: PPD <5mm, BOP-, jährlicher Knochenverlust <0.2mm. Die Überlebensrate für ein HS lag bei 95.4%, für ein HC bei 85.7% und für ein AHC bei 91.7%. 90% aller HS, 71% aller HC und 88% aller AHC zeigte während den 10 Jahren nie Anzeichen einer Periimplantitis, wobei die HC signifikant häufiger Periimplantitis hatten, als die HS (p<0.004). Mit den oben festgelegten Erfolgskriterien ergab sich nach 10 Jahren für die HS eine Erfolgsrate von 74%, für die HC eine von 63% und für die AHC eine von 61%. Veränderte man die Definition auf "PPD<6mm, BOP -, jährlicher Kochenverlust <0.2mm", so betrugen die Erfolgsraten für die HS 78%, für die HC 65% und für die AHC 67%. Basierten die Erfolgskriterien rein auf klinischen Parametern (PPD <5mm, BOP-, keine röntgenologische Anlyse), so stiegen die Erfolgsraten auf 90%, 76% und 89% an. Wählte man die Erfolgskriterien "PPD <6mm und BOP -", so betrugen die Erfolgsraten für die HS 94%, für die HC 82% und für die AHC 94%. Zusammenfassung: Verglich man nach 10-jähriger Funktion die Hohlschrauben des ITI® -Implantat-Systems mit den Hohlzylindern desselben Systems, so ergab sich für die HS sowohl eine signifikant höher Überlebensrate, wie auch ein selteneres Auftreten von Periimplantitis (95.4% vs. 85.7%; 10% vs. 29%). Die Erfolgsraten variieren in Abhängigkeit der in der Definition eines Erfolges festgelegten Grenzwerten enorm stark. Dies erweist sich im Vergleich von verschiedenen Studien als hinderlich, weil die Definition der Erfolgsraten meist auf verschiedenen Kriterien beruhen. Resumen Intención: La intención de este estudio de 10 años (tiempo de observación 8,12, media: 10 años) fue comparar los índices de supervivencia, índices de éxito e índices de complicaciones biológicas usando tres diferentes diseños de implantes del Sistema de Implantes Dentales ITI®. Material y Métodos: Se instalaron en 89 pacientes dentales tratados completamente un total de 112 tornillos huecos (HS), 49 cilindros huecos (HC) y 18 cilindros huecos angulados (AHC) dependiendo de la disponibilidad de volumen óseo y de acuerdo con las necesidades protésicas. Se valoraron parámetros clínicos y radiográficos uno y diez años tras la colocación quirúrgica. Se registraron las incidencias de periimplantitis de acuerdo con varios umbrales a lo largo de 10 años de mantenimiento. Resultados: Los criterios de éxito a los 10 años se situaron en PPD5mm, BoP-, pérdida ósea < 0.2mm por año. El índice de supervivencia para los HS fue del 95.4%, para los HC del 85.7% y para los AHC del 91.7%. El 90% de los HS, el 71% de los HC y el 88% de los AHC no presentaron ninguna incidencia de periimplantitis a lo largo de los 10 años, HC tuvo una significativamente mayor incidencia de periimplantitis que HS (p< 0.004). Con los criterios de éxito antes mencionados, se identificó un índice de éxito para HS del 74%, para HC del 63% y para AHC del 61% a los 10 años. De todos modos, incluyendo una definición de PPD6mm, BoP, y pérdida ósea <0.2mm al año para tener éxito, los índices para HS fueron del 78%, para HC 65% y para AHC 67%, respectivamente. Basando los criterios de éxito puramente en parámetros clínicos (sin análisis radiográficos), tales como: PPD5mm y BoP-, los índices de éxito subieron hasta el 90%, 76% y 89%, respectivamente. Con el PPD6mm y BoP , como criterios de éxito elegidos, los índices respectivos fueron del 94%,82% y 94% para implantes HS, HC y AHC, respectivamente. Conclusiones: Se identificó un significativamente mayor índice de supervivencia al igual que una menor incidencia de periimplantitis para el diseño de tornillo hueco Implante Dental ITI®. (95.4% vs. 85.7; 10% vs. 29%). Dependiendo de la definición del criterio del umbral de éxito, los índices de éxito son altamente variables y por tanto, los informes de los índices de éxito con elaboración de la definición de criterios parece ser crucial para la comparación de los diferentes estudios. [source]