Marginal bone loss around crestal or subcrestal dental implants: prospective clinical study
Sargolzaie Naser, Zarch Hosein Hoseini, Arab Hamidreza, Koohestani Tahereh, Ramandi Mahdiye Fasihi,
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( Sargolzaie Naser ) - Mashhad University of Medical Sciences Dental Research Center
( Zarch Hosein Hoseini ) - Mashhad University of Medical Sciences School of Dentistry Department of Oral and Maxillofacial Radiology
( Arab Hamidreza ) - Mashhad University of Medical Sciences Dental Research Center
( Koohestani Tahereh ) - Mashhad University of Medical Sciences Schoo of Dentistry
( Ramandi Mahdiye Fasihi ) - Mashhad University of Medical Sciences School of Dentistry Department of Periodontics
Abstract
Objectives: The stability of crestal bone has been reported as a major factor in the success of dental implants. Implants can be placed in an equicrestal (crestal) or subcrestal position. The aim of this study was to evaluate the effect of implant depth placement on marginal bone loss.
Materials and Methods: The study was created in a split-mouth design. Immediately after implant surgery, digital parallel radiographs were prepared and levels of bone were measured where marginal bone loss and bone level changes occurred. These measurements were repeated at 3-month and 6-month follow-up periods.
Results: In this interventional study, 49 implants were evaluated in 18 patients. Primary bone height was not significant between the intervention and control groups in both mesial and distal aspects at 3 months and 6 months from the baseline. The mean marginal bone loss on the mesial side was 1.03 mm in the subcrestal group and 0.83 mm in the crestal group. In addition, mean marginal bone loss on the distal side was 0.88 mm and 0.81 mm in the subcrestal and crestal groups, respectively. Marginal bone loss was not significantly different between sexes, the maxilla or mandible, and in the anterior or posterior regions as well as between different lengths and diameters of implants.
Conclusion: Based on the results of this study, there was no significant difference in terms of marginal bone loss between crestal and subcrestal implants.
키워드
Marginal bone loss; Implant; Crestal; Subcrestal
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