Influence of Fixture Thread Exposure on Marginal Bone Level Around Different Implant Systems: A Preliminary Study in Dogs

Purpose To evaluate the influence of implant neck structures on marginal bone loss around intentionally exposed implant fixtures by histomorphometric analysis. Materials and methods Twenty‐four implants representing 3 implant systems were placed in three dogs; an implant system with SLA surface with...

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Bibliographic Details
Published in:Journal of prosthodontics 2018-06, Vol.27 (5), p.443-448
Main Authors: Choi, Bohm, Yoon, Hyun‐Joong, Ha, Won‐Suk, Park, Young‐Min
Format: Article
Language:English
Subjects:
Alveolar Bone Loss - etiology
Animals
Bone loss
Bone resorption
Calcium
Defects
Dental implant
Dental Implantation, Endosseous - methods
Dental Implants
Dental Prosthesis Design
Dentistry
Dogs
Male
Mandible
Mandible - surgery
microthread
Neck
Statistical analysis
Surface Properties
surface roughness
Transplants & implants
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Summary:Purpose To evaluate the influence of implant neck structures on marginal bone loss around intentionally exposed implant fixtures by histomorphometric analysis. Materials and methods Twenty‐four implants representing 3 implant systems were placed in three dogs; an implant system with SLA surface without microthreads (group A); one with SLA + calcium surface without microthreads (group B); and one with SLA surface with microthreads (group C). The histomorphometric analyses for vertical defect length (VDL), infrabony defect height (IDH), and defect depth (DD) were performed at the buccal and lingual sides of each fixture. Results The VDL was lower in group A relative to groups B and C on the buccal and lingual sides. The IDH and DD were higher in group A than group C on the buccal and lingual sides; however, no statistically significant differences were noted between the groups in VDL, IDH, and DD on the buccal and lingual sides of the fixtures. Conclusions In this preliminary study, marginal bone resorption pattern in the canine mandible varied according to the neck design of each implant fixture. Further studies with larger sample size are needed to confirm the effect of microthreads and surface roughness on the marginal bone loss at the exposed implant fixture.
ISSN:1059-941X
1532-849X
DOI:10.1111/jopr.12523