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Implant Prostheses (implant + prosthesis)

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Medical Sciences100%

Selected Abstracts

Implant overdentures for edentulous elders: study of patient preference

GERODONTOLOGY, Issue 1 2009
Shahrokh Esfandiari
Background:, Studies show that elders wearing implant overdentures have improved nutrition and quality of life. However, upfront costs of this therapy are high, and the income of elderly edentulous populations is low. Objectives:, This study was designed (i) to measure the preferences of edentulous patients for mandibular two-implant overdentures using Willingness-To-Pay (WTP) and Willingness-To-Accept (WTA), (ii) to assess the effect of long-term financing on WTP and (iii) to assess the desired role of health care plans in financing dental prostheses. Methods:, Edentulous elders (68,79 years; n = 36) wearing maxillary dentures and either a mandibular conventional denture (CD, n = 13) or a two-implant overdenture with ball attachments (IOD, n = 23) participated in this study. All had received their prostheses 2 years previously, as part of a randomised clinical trial. A three-part questionnaire was completed during a 20-min interview with a trained researcher. Results:, Forty-six per cent (6/13) of the CD wearers and 70% (16/23) of the IOD wearers were willing to pay three times more than the current cost of conventional dentures for implant prostheses. These percentages were increased to 77% (CD) and 96% (IOD) if participants could pay for implant overdentures in monthly instalments. Eighty-six per cent (31/36) of all participants in both groups (21/23 IOD; 10/13 CD) thought that the government should cover at least some of the cost of implant overdentures. Conclusions:, This study shows that, the majority of elderly edentate individuals who have not experienced mandibular two-implant overdenture therapy are willing to pay the cost, particularly when payment can be made in monthly instalments. [source]

Dentist Communication with the Dental Laboratory for Prosthodontic Treatment Using Implants

JOURNAL OF PROSTHODONTICS, Issue 3 2006
Zahra Afsharzand DMD
Purpose: A questionnaire was sent to U.S. dental laboratories to evaluate the level of communication between dentists and laboratory technicians and to determine trends in procedures and materials used in fixed and removable implant restorations. Methods and Materials: Dental laboratories were randomly chosen from the National Association of Dental Laboratories for each of the 50 states. The questionnaire was mailed to the laboratory directors for 199 dental laboratories. One hundred fourteen dental laboratories returned the survey, yielding a response rate of 57%. Of those laboratories, 37 indicated that they did not participate in the fabrication of fixed implant restorations, yielding a response rate of 39%. Forty-two dental laboratories indicated that they did not participate in the fabrication of implant-retained overdenture prostheses, yielding a response rate of 36%. Results: Results from this survey show inadequate communication by dentists in completing work authorization forms. Custom trays are used more frequently for implant-retained overdenture impressions and stock trays for impressions of fixed implant prostheses. Poly(vinyl siloxane) is the material most commonly used for both fixed and removable implant-supported prostheses. Two implants with stud attachments are used more widely than those with bar attachments for implant-retained overdentures. Conclusions: Most laboratories working on implant prosthodontic cases report inadequate communication between the laboratory and dentists related to materials and techniques used in fabrication of implant restorations. [source]

The use of digital imaging in the restoration of missing dental tissues with a removable implant prosthesis

JOURNAL OF PROSTHODONTICS, Issue 4 2002
Edward M. Amet DDS
[source]

Rehabilitation with dental prosthesis can increase cerebral regional blood volume

CLINICAL ORAL IMPLANTS RESEARCH, Issue 6 2005
Ikuya Miyamoto
Abstract: Treatment with denture for edentulous people is highly important for maintaining quality of life. However, its effect on the brain is unknown. In this experimental study, we hypothesized that dental prosthesis can recover not only the physical condition of mastication system but also the regional brain activity. We evaluated functional brain imaging of edentulous subjects fixed by dental implant prosthesis with clenching tasks by multi-channel near-infrared optical topography. Results revealed a significantly (P<0.001; paired t -test) increased cerebral regional blood volume during maximum voluntary clenching task by implant-retained prosthesis. There were no statistically significant differences between patients with and without prosthesis in the latency to the maximum regional blood volume after the task. Conclusively, clenching can be effective for increasing cerebral blood volume; accordingly maintenance of normal chewing might prevent the brain from degenerating. Résumé Le traitement par prothèses des édentés est extrêmement important pour garder la qualité de vie. Cependant, son effet sur le cerveau est inconnu. Dans cette étude expérimentale, l'hypothèse qui a étéémise concernait les prothèses dentaires et leur aptitude à rétablir non seulement la condition physique du système masticatoire mais également l'activité cérébrale régionale. L'imagerie du cerveau fonctionnel de l'édenté avec des prothèses sur implants avec travail de serrage par topographie optique près de l'infrarouge à multiple canaux. Les résultats ont révélé une augmentation significative (P<0.001/test-t par paires) de la circulation sanguine régionale cérébrale durant la force de serrage volontaire maximale par les prothèses retenues sur implants. Il n'y avait aucune différence significative entre les avec et sans prothèses dans le temps de latence jusqu'à la circulation sanguine régionale maximale après le serrage. Le serrage peut être efficace pour augmenter la circulation sanguine cérébrale et donc le maintien d'une mastication normale pourrait prévenir toute dégénérescence cérébrale. Zusammenfassung Die Versorgung mit Prothesen bei zahnlosen Patienten ist sehr wichtig, um die Lebensqualität zu erhalten. Der Einfluss auf das Gehirn ist jedoch nicht bekannt. In dieser experimentellen Studie stellten wir die Hypothese auf, dass eine dentale Prothese nicht nur den physischen Zustand des Kausystems wieder herstellen kann, sondern auch die regionale Hirnaktivität beeinflusst. Wie untersuchten funktionelle Gehirnbilder von zahnlosen Subjekten mit auf Implantaten befestigten Prothesen, welche Aufgaben beim Zusammenbeissen erledigen mussten, mittels multi-kanal optischer Topographie nahe am Infrarotbereich. Die Resultate zeigten einen signifikanten (P<0.001; gepaarter t -Test) Anstieg in der regionalen cerebralen Durchblutung während des Maximums beim freiwilligen Zusammenbeissen mit der auf Implantaten befestigten Prothese. Es bestanden keine statistisch signifikanten Unterschiede in der Latenzzeit bis zur maximalen regionalen Durchblutung nach Erfüllung der Aufgabe mit oder ohne Prothese. Es wird die Schlussfolgerung gezogen, dass das Zusammenbeissen zu einem Ansteigen der cerebralen Durchblutung führen kann. Daher könnte der Erhalt einer normalen Kaufunktion einer Degeneration des Gehirn entgegenwirken. Resumen El tratamiento con dentaduras para personas edéntulas es altamente importante para conservar la calidad de vida. En este estudio experimental, hemos hipotizado que las prótesis dentales pueden recuperar no solo las condiciones físicas del sistema masticatorio sino también la actividad cerebral regional. Hemos evaluado las imágenes funcionales del cerebro de pacientes edéntulos rehabilitados por prótesis implantosoportadas con tareas de apretado por medio de topografía óptica casi-infrarroja multicanal. Los resultados revelaron un flujo sanguíneo cerebral regional significativamente (P<0.001; t -test pareado) aumentado durante la mordida máxima voluntaria con prótesis implantosoportada. No hubo diferencias estadísticamente significativas entre con o sin prótesis en la latencia al flujo sanguíneo regional tras la tarea. En conclusión, el apretado puede ser efectivo para incrementar el flujo sanguíneo cerebral; en consecuencia, el mantenimiento de una masticación normal puede prevenir la degeneración cerebral. [source]