ABSTRACT
PURPOSE: Submerged and nonsubmerged ITI solid-screw titanium implants were followed retrospectively from 1989 to 1993 and prospectively from 1994 on to analyze long-term prognosis in partially and fully edentulous patients. MATERIAL AND METHODS: A total of 468 implants were consecutively inserted in 191 patients from 1989 to 1998. Two hundred twenty-eight successfully integrated fixed-restoration implants and 238 with removable restorations were restored following a healing period of 4 to 6 months (9 months in sinus floor elevation sites). From 1994 on all implants inserted were documented annually up to 9 years. During examination the clinical status of the implants was analyzed and evaluated according to predefined criteria of success and this allowed the calculation of 10-year cumulative survival and success rates for 468 implants. RESULTS: Two implants (0.43%) did not successfully integrate during the healing period, and 8 implants (1.7%) were classified as failures during follow-up (1 late failure under load, 7 with a progressive bone loss from 1 to 3 threads). Including 68 implants in subjects who dropped out (with a dropout rate of 14.4%), the 10-year cumulative survival and success rates were 99.2% and 96.4%, respectively. DISCUSSION: Over the course of this long-term study, osseointegrated implants, once used as a last possible solution, became nearly standard in cases of single-tooth implants because of the high rate of long-term success. Life table analysis not only determines whether an implant is functioning, it also makes a statement about its clinical status according to strict success criteria. CONCLUSION: The study demonstrated that ITI solid-screw titanium implants achieved success rates above 95% in a clinical center for an observation period of up to 10 years.
Subject(s)
Dental Implantation, Endosseous/statistics & numerical data , Dental Implants/statistics & numerical data , Titanium , Adolescent , Adult , Aged , Aged, 80 and over , Bone Resorption/classification , Dental Prosthesis, Implant-Supported , Dental Restoration Failure , Female , Follow-Up Studies , Humans , Jaw, Edentulous/surgery , Jaw, Edentulous, Partially/surgery , Life Tables , Longitudinal Studies , Male , Middle Aged , Osseointegration , Prospective Studies , Retrospective Studies , Survival Analysis , Treatment OutcomeABSTRACT
The success of osseous and oral implants is partially dependent on the design and on the mechanical way of insertion. The torque moments during manual and machine-insertion and the correlation between torque and design of the implants were topics of this paper. The experiments were separated in two parts using pork-ribs in vitro. The first experiment was done with manual and machine insertion of implants. The second trial dealt with machine overloading of correctly inserted implants. The cylindrical implants showed an initial insertion curve followed by a linear phase which ended in a peak when insertion depth was reached. The conical formed implants did not show an initial curve while being inserted but a steeper linear phase and a defined peak when reaching the insertion depth. The torque moments at deep insertion (normal drilling depth) differed about 80% to the torque moments at normal insertion. The torques of continual machine insertion are 15 to 20% lower than those of discontinual manual insertion. According to these findings the design parameters for an optimal enossal oral dental implant should be of a cylindrical form with step like design, a cylindrical neck and a self cutting function of the symmetrical thread in combination with a blunt implant tip.
Subject(s)
Dental Implantation, Endosseous/methods , Dental Implants , Dental Prosthesis Design , Implants, Experimental , Animals , Bone Screws , Dental Implantation, Endosseous/instrumentation , Dental Stress Analysis , Swine , TorqueSubject(s)
Cephalometry/methods , Diagnosis, Computer-Assisted/instrumentation , Facial Asymmetry/diagnosis , Imaging, Three-Dimensional/instrumentation , Lasers , Models, Dental , Cephalometry/instrumentation , Facial Asymmetry/diagnostic imaging , Humans , Patient Care Planning , Tomography, X-Ray ComputedSubject(s)
Dental Implants , Osseointegration , Adolescent , Adult , Aged , Aged, 80 and over , Bone Screws , Dental Implantation, Endosseous , Dental Implants, Single-Tooth , Dental Plaque Index , Female , Follow-Up Studies , Humans , Male , Middle Aged , Periodontal Index , Time Factors , TitaniumABSTRACT
Neste artigo o autor relata a experiência obtida através dos implantes imediatos de Tübingen a 22 anos atrás, que levou ao desenvolvimento de um novo sistema de implantes, moderno adaptado as necessidades atuais, o Frialit 2. Este sistema é descrito em todos os seus aspectos e elementos, sempre com respaldo científico de vários anos de testes e experiências de longo prazo
Subject(s)
Dental ImplantsABSTRACT
Este trabalho consiste na análise dos insucessos de 396 implantes do Sistema Ha-Ti colocados em 118 pacientes de cirurgia maxilo facial, onde observou-se um total de 27 implantações mal-sucedidas. Não só os implantes perdidos foram considerados como insucessos, mas também aqueles mal-posicionados que não obtiveram resultados protéticos satisfatórios foram considerados como tal. Aspectos relacionados com a indicação, localização, recursos cirúrgicos combinados as implantações com finalidade de melhorar a funcionalidade dos implantes e a estética da prótese foram abordados neste trabalho
