Kumar Santosh, Jayaswal Priyanka, Pentapati Kalyana Chakravarthy, Valiathan Ashima, Kotak Nidhi
Manipal College of Dental Sciences, Manipal University, Manipal, Karnataka, India.
J Orthod. 2012 Jun;39(2):89-94; quiz 137. doi: 10.1179/1465312512Z.00000000010.
To investigate the prevalence, demographic and clinical characteristics of transmigrated canines in a south Indian orthodontic patient population.
Retrospective observational study.
Manipal University, Manipal, India.
Panoramic radiographs of 3500 patients were examined and data collected regarding the number and side of transmigrated canines, sex and age of patients, any other associated pathologies and subsequent treatment. Transmigrated canines were classified according to Mupparapu's classification.
The prevalence of transmigrated canines in this population was found to be 0.46% of which, seven were males (age: 17-51 years) and nine were females (age: 17-35 years). All transmigrated canines were unilateral and impacted. Eleven canines migrated from the left to the right side, and five migrated from the right to the left. Of the 16 patients, 13 had retained primary canines and 3 had exfoliated primary canines. Eight canines exhibited a type 1 transmigratory pattern, type 2, type 4 and type 5 transmigratory patterns were exhibited by two canines each. One of the canines was classified as type 3. Three canines were associated with dentigerous cyst formation. Four cases were treated by orthodontic traction, while one was removed surgically. Others were observed periodically.
Diagnosis of transmigration at earlier stages is important to prevent more complex occlusal problems.
调查印度南部正畸患者中犬牙异位萌出的患病率、人口统计学和临床特征。
回顾性观察研究。
印度马尼帕尔马尼帕尔大学。
检查3500例患者的全景X线片，收集有关犬牙异位萌出的数量和部位、患者性别和年龄、任何其他相关病变及后续治疗的数据。犬牙异位萌出根据穆帕拉普分类法进行分类。
该人群中犬牙异位萌出的患病率为0.46%，其中男性7例（年龄：17 - 51岁），女性9例（年龄：17 - 35岁）。所有异位萌出的犬牙均为单侧且阻生。11颗犬牙从左侧迁移至右侧，5颗从右侧迁移至左侧。16例患者中，13例保留了乳牙犬牙，3例乳牙犬牙已脱落。8颗犬牙表现为1型异位萌出模式，2颗犬牙各表现为2型、4型和5型异位萌出模式。其中1颗犬牙被分类为3型。3颗犬牙与含牙囊肿形成有关。4例采用正畸牵引治疗，1例手术拔除。其他病例定期观察。
早期诊断犬牙异位萌出对于预防更复杂的咬合问题很重要。
