전비극 골 채취술이 전반적인 코의 외형에 미치는 술후 효과

Abstract

Purpose: Bone harvesting from anterior nasal spine (ANS), particularly during implant placement in anterior maxilla, is frequently used to correct peri-implant bone defects. However, many clinicians are concerned about the postoperative effect of removing the ANS on nasal outline of as the ANS is an integral structure supporting the nose. This study aimed to describe the technique of ANS bone graft and to investigate postoperative effects of bone harvesting from the ANS on the overall nasal shape.

Patients and Methods: Fifteen patients with single maxillary first incisal rehabilitation using dental implant were enrolled in this prospective clinical study. Simply by extending the subperiosteal dissection in the same surgical field without additional local anesthesia, about 0.25 – 0.5 ml of block bone could be harvested from ANS. Nose width (NW), nasolabial angle (NLA), and nasal tip depth (NTD) were measured and analyzed on lateral and frontal photographs taken at preoperative (T0), postoperative 1 week (T1), 3 months (T2), and 6 months (T3), respectively. Postoperative complications were also recorded.

Results: The increase of NW and the decrease of both of NLA and NTD were found at T1, which were statistically significant (P < .05). At T3, NW, NLA and NTD returned to preoperative measurements at T1 without major complications.

Conclusion: The ANS could be an effective and easy intraoral source for autologous bone. Despite of acute soft tissue swelling, postoperative net effects of removing the ANS on the overall nasal shape, including collapse of nasal tip or widening of nose base, were negligible.