Evaluation of the response to wide diameter dental implants 2
Research type
Research Study
Full title
Prospective evaluation of soft and hard tissue alterations after immediate placement of wide body dental implants that have been in function for 1 year.
IRAS ID
179580
Contact name
Andre Christiaan Hattingh
Contact email
Sponsor organisation
private project
Duration of Study in the UK
1 years, 5 months, 29 days
Research summary
This study is about the replacement of human molar teeth with wide diameter dental implants. Since the discovery of bones’ ability to attach to titanium about 50 years ago, dental implants have been produced in various shapes and sizes. Although implant length has been an obvious variable, implant width has attracted little attention, until recently. The placement of dental implants following the removal of teeth, has become a trusted treatment method in modern day dentistry. However the complexity of molar sockets and the fact that molars are located in high force bearing areas, make the use of conventional sized dental implants difficult. A wider diameter implant could under certain circumstances be a valuable tool to achieve the successful replacement of molar teeth. A limited number of studies are available on this topic and this study aims to address and explore some of the most important points relating to this subject.
A prospective study on wide diameter implants – Part 1: Clinical outcome and volume changes. This study would aim to be a prospective evaluation of 50 wide diameter implants during the first year of function. The study will assess all wide diameter implants that are placed into molar extraction sockets (single cases only). The implants will be left to heal for 4 and the crown will be connected at 4 months. We will examine: a). implant survival, b). bone loss as assessed by means of radiographs taken at baseline, at 4 months and 1 year. c). Cosmetic appearances. d). Gum health. e). Three dimensional studies of plaster casts will be completed. Impression will be taken of the molars before removal, at four months since the implants have been placed and again at 1 year of function. Three sets of models will be available for volume change measurements: i) at the time of tooth removal ii) at four months and iii) at 1 year of function. These models will be scanned and a volume analysis will be computed to assess the changes in bone and soft tissue through the above mentioned time periods. f). Patient satisfaction will be examined by questionnaires.
A prospective study on wide diameter implants – Part 2: Effect of insertion torque (bone resistance) on the clinical outcome. The aim of this study would be to evaluate the influence of insertion torque on the clinical outcome of wide diameter implants, based on a mathematical and clinical model. The protocol will include the registration of insertion torque values of wide diameter implants, installed in molar extraction sockets (a total of 50 implants). The registered insertion torque will be evaluated in relation to implant survival and success (in other words bone loss). To support the findings, a model will be created, evaluating the effect of insertion torque in the surrounding bone. This will be done by using wide diameter implants and a regular diameter implant at different (hypothetical) insertion torques. The findings of the model will be compared to the clinical findings from the study.
REC name
London - Camden & Kings Cross Research Ethics Committee
REC reference
15/LO/1099
Date of REC Opinion
2 Oct 2015
REC opinion
Further Information Favourable Opinion