A clinical study of the Branemark dental implant system

Gregory, M C; Murphy, William M.; Scott, Jeannine M.; Watson, Christopher J.; Reeve, Pieter

doi:10.1038/sj.bdj.4807071

Cited by 18 publications

(14 citation statements)

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“…In a good dental implant design the maximum strain values for the two types of bone will be as close as possible. Particular attention has been paid in this study to the stress and strain distributions close to the neck of the implant, a region found to be susceptible to bone resorption in clinical practice (15). The gradients of strain predicted in the models examined here can be very high near the maximum value.…”

Section: Methodsmentioning

confidence: 94%

Comparative Analysis of Bone Stresses and Strains in the Intoss dental Implant with and without a Flexible Internal Post

Clift

Fisher

Edwards³

1995

Proc Inst Mech Eng H

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The clinical success of any dental implant is dependent upon the maintenance of good-quality bone supporting it. Previous studies have shown high values of strain around the neck of an implant under lateral loading. These high values may lead to fatigue damage and resorption in lower strength cancellous bone. In this study, the finite element method has been used to study the bone strain distribution around the following implants: (a) an Intoss dental implant, referred to as the 'standard' implant; (b) a comparative Branemark implant and (c) a modified Intoss implant with a central flexible post, referred to as the 'modified' implant. Three different bone distributions have been investigated under axial and lateral loading: (a) implant surrounded by cortical bone; (b) implant tip supported by cortical bone with a thin layer of cancellous bone along the length and top of the implant; (c) implant tip and top supported by cortical bone with a thin layer of cancellous bone along the remaining length. For the standard implant, similar maximum equivalent strain values were predicted for the bone surrounding a comparable length Branemark-type implant. Modification of the standard implant design to include a flexible central post resulted in a decrease in the maximum von Mises stresses and equivalent strains in the cancellous bone. It is postulated that this will reduce the likelihood of bone fatigue failure and subsequent resorption in this bone. Thus the proposed design change is predicted to be highly beneficial in terms of bone load transfer.

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Section: Methodsmentioning

confidence: 94%

Comparative Analysis of Bone Stresses and Strains in the Intoss dental Implant with and without a Flexible Internal Post

Clift

Fisher

Edwards³

1995

Proc Inst Mech Eng H

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“…The findings of Albrektsson et al . (1987) , and Gregory et al . (1990) were in accordance with Haraldson & Carlsson (1979) concerning improvement in bite force and chewing efficiency with osseo‐integrated implants.…”

Section: Number Position and Condition Of Teeth And Oral Statusmentioning

confidence: 97%

The relationship between satisfaction with mouth and number and position of teeth

Elias

Sheiham

1998

J of Oral Rehabilitation

134

138

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A number of studies have suggested that many people are satisfied with less than 28 natural teeth. This review assesses the evidence. The main conclusion was that less than a complete dentition can satisfy oral functional needs. Missing posterior teeth were not very important from a subjective aspect. The demand for replacement of missing teeth is related to the position of missing teeth. Most studies agree that individuals were more concerned about missing anterior teeth and having anterior rather than posterior teeth replaced. Aesthetics is more important than function for a great majority of individuals. However, certain socio-demographic factors, such as age, can change the subjective need for replacement of missing teeth. Some studies have assessed the social and psychological impacts on oral health status. The position of missing teeth was assessed, in terms of groups of missing teeth, anterior or posterior, that would affect an individuals' subjective need for replacement by partial prosthesis. Large numbers of people that have free end removable partial dentures made do not wear them because subjective needs are lower than normatively determined needs for replacement of missing teeth. Some studies have proposed alternatives to the replacement of missing teeth, such as the shortened dental arch concept.

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“…19 The use of a plastic probe specific ally de sign ed to d eliver a c on s ta n t ligh t fo rc e o f 2 0 g a p p e a r e d t o c a u s e m i n im a l patient discomfort in this study. Various studies show that mean probing depth ranges of stable implants are between 1.3-3.8 mm.…”

Section: Discussionmentioning

confidence: 97%