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KMID : 1034220190110010034
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Journal fo Korean Academy of Osseointegration
2019 Volume.11 No. 1 p.34 ~ p.39
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Risk factors of pre-formed titanium mesh exposure in guided bone regeneration for dental implants
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Sohn Jun-Bae
Lee Ho
Han Yoon-Sic
Kim Chang-Su
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Abstract
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Purpose: This study aimed to identify the risk factors of pre-formed titanium mesh (PFTM) exposure in guided bone regeneration (GBR) for dental implants.
Materials and Methods: Fifty PFTM cases in 36 patients were retrospectively reviewed using medical records and radiographs. The outcome variable was exposure of the PFTM. The predictor variables were age, sex, diabetes, region of fixture installation, immediate implantation right after tooth extraction, palatal or lingual non-self-contained defect, types and dimensions of implant fixtures, submerged or non-submerged fixture installation method, types of bone graft material, the addition of a resorbable barrier membrane on PFTM, and the amount of horizontal bone gain.
Results: The mean age of patients was 66.12 ± 9.65 years, and 64.0% of the PFTM procedures were performed on females. The average amount of horizontal bone gain was 3.082 ± 1.200 mm. Exposure of the PFTM occurred in 10 cases; of these, 8 did not have severe bone loss and completed the prosthetic treatment. However, GBR failed in the other 2 cases. In a univariable analysis, the exposure of PFTM was related to the fixture installation to the maxilla (P = 0.011) and the presence of palatal or lingual non-self-contained defects (P = 0.002). Multivariable logistic regression analysis showed a significant association between the exposure of PFTM and palatal or lingual non-self-contained defects (OR = 13.276, P = 0.012).
Conclusions: PFTM can be used in GBR with predictability. The exposure of the PFTM can be prevented by avoiding the formation of palatal or lingual non-self-contained defects when the fixture is placed.
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KEYWORD
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Dental implants, Alveolar bone atrophy, Bone regeneration, Titanium surgical mesh, Postoperative complications
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