Relationship between chin deviation and the position and morphology of the mandible in individuals with a unilateral cleft lip and palate
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Objective: In this study, we aimed to examine the relationship between chin deviation and the positional and morphological features of the mandible and to determine the factors that contributed to chin deviation in individuals with a unilateral cleft lip and palate (UCLP). Methods: Cone-beam computed tomography (CBCT) images of 28 adults with UCLP were analyzed in this study. Segmented three-dimensional temporomandibular fossa and mandible images were reconstructed, and angular, linear, and volumetric parameters were measured. Results: For all 28 individuals, the chin was found to deviate to the cleft side by 1.59 mm. Moreover, among these 28 individuals, only 7 showed distinct (more than 4 mm) chin deviation, which was toward the cleft side. Compared to the non-cleft side, the mandibular body length, frontal ramal incli nation, and vertical position of the condyle were lower and inclination of the temporomandibular fossa was steeper on the cleft side. Furthermore, the dif ferences in inclination of the temporomandibular fossa, mandibular body length, ramus length, and condylar volume ratio (non-deviated/deviated) were po sitively correlated with chin deviation. Conclusions: UCLP individuals show mild chin deviation to the cleft side. Statistical differences were noted in the parameters that represented positional and morphological asymmetries of the mandible and temporomandibular fossa; however, these differences were too small to indicate clinical significance.
Abstract
Objective: In this study, we aimed to examine the relationship between chin deviation and the positional and morphological features of the mandible and to determine the factors that contributed to chin deviation in individuals with a unilateral cleft lip and palate (UCLP). Methods: Cone-beam computed tomography (CBCT) images of 28 adults with UCLP were analyzed in this study. Segmented three-dimensional temporomandibular fossa and mandible images were reconstructed, and angular, linear, and volumetric parameters were measured. Results: For all 28 individuals, the chin was found to deviate to the cleft side by 1.59 mm. Moreover, among these 28 individuals, only 7 showed distinct (more than 4 mm) chin deviation, which was toward the cleft side. Compared to the non-cleft side, the mandibular body length, frontal ramal incli nation, and vertical position of the condyle were lower and inclination of the temporomandibular fossa was steeper on the cleft side. Furthermore, the dif ferences in inclination of the temporomandibular fossa, mandibular body length, ramus length, and condylar volume ratio (non-deviated/deviated) were po sitively correlated with chin deviation. Conclusions: UCLP individuals show mild chin deviation to the cleft side. Statistical differences were noted in the parameters that represented positional and morphological asymmetries of the mandible and temporomandibular fossa; however, these differences were too small to indicate clinical significance.
참고문헌 (28)
- Shetye PR, "Midfacial morphology in adult unoperated complete unilateral cleft lip and palate patients", Angle Orthod, 76, pp.810~816 (2006)
- Mølsted K, "Asymmetry of the maxilla in children with complete unilateral cleft lip and palate", Cleft Palate J, 27, pp.184~190 (1990)
- Kyrkanides S, "Cranial base and facial skeleton asymmetries in individuals with unilateral cleft lip and palate", Cleft Palate Craniofac J, 37, pp.556~561 (2000)
- Laspos CP, "Mandibular asymmetry in noncleft and unilateral cleft lip and palate individuals", Cleft Palate Craniofac J, 34, pp.410~416 (1997)
- Ishiguro K, "A longitudinal study of morphological craniofacial patterns via P-A x-ray headfilms in cleft patients from birth to six years of age", Cleft Palate J, 13, pp.104~126 (1976)
- Smahel Z, "Differences in craniofacial morphology between complete and incomplete unilateral cleft lip and palate in adults", Cleft Palate J, 20, pp.113~127 (1983)
- Kurt G, "Mandibular asymmetry in cleft lip and palate patients", Eur J Orthod, 32, pp.19~23 (2010)
- Son WS, "Facial asymmetry of unilateral cleft lip and palate patients", Korean J Orthod, 25, pp.13~18 (1995)
- Ilknur Veli, "Cone-beam computed tomography assessment of mandibular asymmetry in unilateral cleft lip and palate patients", 대한치과교정학회지, 41(6), pp.431~439 (2011), 대한치과교정학회
- Bishara SE, "Dental and facial asymmetries: a review", Angle Orthod, 64, pp.89~98 (1994)
- Ahn JS, "Relationship between perception of facial asymmetry and posteroanterior cephalometric measurements", Korean J Orthod, 31, pp.489~498 (2001)
- Lee GH, "Studies of relationship between P-A cephalometric measurements and vidual facial asymmetry", Korean J Phys Anthropol, 11, pp.41~48 (1998)
- Hwang HS, "Maxillofacial 3-dimensional image analysis for the diagnosis of facial asymmetry", Am J Orthod Dentofacial Orthop, 130, pp.779~785 (2006)
- Haraguchi S, "Facial asymmetry in subjects with skeletal Class III deformity", Angle Orthod, 72, pp.28~35 (2002)
- Michiels G, "Determinants of facial attractiveness in a sample of white women", Int J Adult Orthodon Orthognath Surg, 9, pp.95~103 (1994)
- Hwang HS, "Maxillofacial 3-dimensional image analysis for the diagnosis of facial asymmetry", J Korean Dent Assoc, 42, pp.76~83 (2004)
- Hilgers ML, "Accuracy of linear temporomandibular joint measurements with cone beam computed tomography and digital cephalometric radiography", Am J Orthod Dentofacial Orthop, 128, pp.803~811 (2005)
- Schlueter B, "Cone beam computed tomography 3D reconstruction of the mandibular condyle", Angle Orthod, 78, pp.880~888 (2008)
- Christiansen EL, "Computed tomography of the normal temporomandibular joint", Scand J Dent Res, 95, pp.499~509 (1987)
- Kobayashi F, "A morphological study on the temporomandibular joint using X-ray computed tomography: relation to anterior disk displacement", Dent Radiol, 36, pp.73~80 (1996)
- Tsiklakis K, "Radiographic examination of the temporomandibular joint using cone beam computed tomography", Dentomaxillofac Radiol, 33, pp.196~201 (2004)
- Bergersen EO, "Enlargement and distortion in cephalometric radiography: compensation tables for linear measurements", Angle Orthod, 50, pp.230~244 (1980)
- Fuhrmann RA, "Threedimensional imaging of craniomaxillofacial structures with a standard personal computer", Dentomaxillofac Radiol, 24, pp.260~263 (1995)
- Kim YH, "qAsymmetry of the sphenoid bone and its suitability as a reference for analyzing craniofacial asymmetry", Am J Orthod Dentofacial Orthop, 124, pp.656~662 (2003)
- 조진형, "하악 관절와의 형태가 하악 이부편위에 미치는 영향에 관한 3차원 영상 연구", Maxillofacial Plastic Reconstructive Surgery, 33(4), pp.337~345 (2011), 대한악안면성형재건외과학회
- Kawakami M, "Morphological differences in the temporomandibular joints in asymmetrical prognathism patients", Orthod Craniofac Res, 9, pp.71~76 (2006)
- Yamada K, "Morphology of the articular eminence in temporomandibular joints and condylar bone change", J Oral Rehabil, 31, pp.438~444 (2004)
- Björk A, "Normal and abnormal growth of the mandible. A synthesis of longitudinal cephalometric implant studies over a period of 25 years", Eur J Orthod, 5, pp.1~46 (1983)