파노라마 방사선사진상의 위험 징후와 하악 제3 대구치 발치 후 하치조신경 손상 (Inferior alveolar nerve injury following removal of mandibular third molar and panoramic radiological risk sign)

서지정보

· 발행기관 : 대한악안면성형재건외과학회
· 수록지 정보 : Maxillofacial Plastic Reconstructive Surgery / 30권 / 2호 / 165 ~ 171페이지
· 저자명 : 이용인, 김창수, 홍종락, 이준휘, 신창훈, 표성운

초록

The aim of this study was to evaluate the incidence of panoramic raiological risk signs related with
mandibular third molar extraction, and the relationship between these risk signs and inferior alveolar
nerve(IAN) injury after tooth extraction.
Cases were defined as 1000 mandibular third molars extracted by surgical approach at Samsung
Medical Center during the period from March 2001 to December 2006. Seven radiological risk signs
were assessed on the panoramic radiogram by three expert oral surgeons. Clinical demographic data
and severity of IAN injury were examined on medical records. Bivariate analyses were completed to
assess the relationship between radiological risk signs and IAN injury.
The radiological risk signs showed in 381 cases(38.1%). The incidence of each radiological risk
signs were: interruption of IAN white line, 152 cases(15.2%); deflected roots, 141 cases(14.1%);
darkening root, 119 cases(11.9%); diversion of IAN, 57 cases(5.7%) ; IAN narrowing, 37 cases(
3.7%); root narrowing, 17 cases(1.7%); dark and bifid apex, 10 cases(1.0%). The incidence of
IAN injury in cases with risk signs were: in the case of any sign, 3.6%; interruption of IAN white
line, 2.6%; deflected roots 5.7%; darkening root, 3.4%; diversion of IAN, 5.7%; IAN narrowing,
3.7%; root narrowing, 5.9%; dark and bifid apex, 0%. No IAN injury was showed in 619 cases
without risk sign (p<0.05).
In conclusion, the presence of panoramic risk signs was associated with an increased risk for IAN
injury during mandibular third molar extraction, whereas the absence of risk signs was associated
with a minimal risk of nerve injury.

영어초록

The aim of this study was to evaluate the incidence of panoramic raiological risk signs related with
mandibular third molar extraction, and the relationship between these risk signs and inferior alveolar
nerve(IAN) injury after tooth extraction.
Cases were defined as 1000 mandibular third molars extracted by surgical approach at Samsung
Medical Center during the period from March 2001 to December 2006. Seven radiological risk signs
were assessed on the panoramic radiogram by three expert oral surgeons. Clinical demographic data
and severity of IAN injury were examined on medical records. Bivariate analyses were completed to
assess the relationship between radiological risk signs and IAN injury.
The radiological risk signs showed in 381 cases(38.1%). The incidence of each radiological risk
signs were: interruption of IAN white line, 152 cases(15.2%); deflected roots, 141 cases(14.1%);
darkening root, 119 cases(11.9%); diversion of IAN, 57 cases(5.7%) ; IAN narrowing, 37 cases(
3.7%); root narrowing, 17 cases(1.7%); dark and bifid apex, 10 cases(1.0%). The incidence of
IAN injury in cases with risk signs were: in the case of any sign, 3.6%; interruption of IAN white
line, 2.6%; deflected roots 5.7%; darkening root, 3.4%; diversion of IAN, 5.7%; IAN narrowing,
3.7%; root narrowing, 5.9%; dark and bifid apex, 0%. No IAN injury was showed in 619 cases
without risk sign (p<0.05).
In conclusion, the presence of panoramic risk signs was associated with an increased risk for IAN
injury during mandibular third molar extraction, whereas the absence of risk signs was associated
with a minimal risk of nerve injury.

참고자료

· 없음