|Year : 2018 | Volume
| Issue : 1 | Page : 31-33
A novel implant designed to improve mechanical bone adaptation
Private Clinic for Periodontics Implantology and Restorative Dentistry, Jerusalem, Israel
|Date of Web Publication||25-Jul-2018|
Dr. Amos Ben-Yehouda
Private Clinic for Periodontics Implantology and Restorative Dentistry, R&D in Gravity Implants co, Ramban 33, Jerusalem
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Research shows an exaggerated bone loss adjacent to installed implants during the healing period. This phenomenon may continue later along the years in a slower rate. Sometimes, there is even an acceleration of the phenomenon during the years. The presented implant was designed to restore short-term bone loss caused during the healing phase and to slow and even prevent long-term bone loss. The result is achieved by emitting at the bone, mainly, compressive stress vectors that are essential for improved mechanical bone adaptation, including organization of bone into load-bearing type and modeling of the bone by enlarging its volume. This case report shows how a nonfunctional bone architecture turns into a load-bearing type and how initial bone loss may be restored after implant loading.
Keywords: Bone modelling, dental implant bone loss, mechanical bone adaptation
|How to cite this article:|
Ben-Yehouda A. A novel implant designed to improve mechanical bone adaptation. J Dent Implant 2018;8:31-3
| Introduction|| |
Clinical follow-up states the impression of bone loss along dental implants during the years. This situation is supported lately by retrospective long-term studies. Bone loss was found among 64% of the patients , treated by implants (up to 10 years of follow-up). More than that, it seems , that the older the implant, the grater is the rate of bone absorption. The extent of moderate-to-severe bone loss was found to reach 40.1% after 9 years of  loading. Initial bone loss during the healing phase which is significant was not considered usually in these studies; however, other researches show an exaggerated loss of marginal bone support adjacent to inserted implants during the healing period. It was found to be between 1.03 and 1.28 mm after 3 months of , healing. More information exists concerning bone level after 1 year of loading. It , was found to be between 1.6 mm  and 1.5 mm. Whereas, compressive stress in the bone implant interface maintains ideally mechanical bone adaptation, shear stress violate implant integration and hamper  bone remodeling. These shear stresses are more prominent in the cervical area of the implants and so make it prone to bone degradation.
Orthopedic research supports the hypothesis that muscle forces are not enough  for bone remodeling and that the effect of gravity forces is superior. The unique effect of gravitation impact loads is the fact that they are repeated compressive loads with one principal direction and are happened to last for a very short time. These compressive impact loads enable an efficient curving of the bone with minimal damage at the point of power application. The result of this activity is enlargement of bone volume, thickening of cortical bone, and ,, arrangement of bone trabecula into load-bearing architecture as a normal physiologic protective action. These insights are implemented in the presented implant by increasing compressive stress at the bone implant interface and curving peripheral bone at the same time during occlusal loads.
| Case Report|| |
A 40-year-old female patient asked for rehabilitation of missing tooth #30 [Figure 1]. Epsilon implant 4.7 mm width and 10 mm length (Gravity Implants Co. Israel) was installed [Figure 2]. The unique macro-geometry of this implant enables bone compression along the implant beginning at the most coronary area [Figure 3]. Three months later, at the stage of implant loading, it can be seen that there was loss of 2 mm of bone [Figure 4]. Two years of loading reveal rearrangement of bone trabecula and reconstruction of most of the bone that was lost during the stage of implant installation [Figure 5]. Three years of loading follow-up proves complete restoration of lost bone [Figure 6].
| Discussion|| |
Bone loss around dental implants is a common phenomenon that necessitates professional help, consumes money, and causes discomfort for patients. Sometimes, the result is extraction of the implants and installation of new implants.
The present implant was designed in attempt to overcome bone loss around dental implants. In this case report, a follow-up of 3 years shows a complete restoration of lost bone.
Implant macro-geometry that is intended to transmit compressive stresses to nearby bone during occlusal impact loads may encourage load-bearing architecture of the bone and even reconstruction of initial bone loss that during the healing phase.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6]