OBJECTIVES: To develop a reliable method to measure buccolingual inclination of mandibular canines and first molars, and to evaluate a possible correlation between buccolingual inclination with their respective interdental width. METHODS: The sample consisted of 37 boys and 41 girls untreated orthodontic patients averaging 13.2±0.96 years. A line tangent to the inferior border of the mandible and the long axis of the tooth measured buccolingual inclination. Intercanine and intermolar widths were measured on casts. RESULTS: Reliability (ICC) values were >0.94. The mean mandibular canine inclination was 98.0±4.1°, with mean width 26.0±2.2 mm. The mean mandibular molar inclination was 74.6±4.7° with mean width 40.9±2.7 mm. First molar inclination of Class II molar subjects (73.7±4.2°) was significantly less (p≤0.05) than of Class I subjects (75.6±4.9°). There were low correlations between interdental width and buccolingual inclination. CONCLUSIONS: A practical and reliable method to measure buccolingual inclination of mandibular canines and first molars is here described using Cone Beam Computed Tomography and a commercially available DICOM software.
OBJECTIVES: To develop a reliable method to measure buccolingual inclination of mandibular canines and first molars, and to evaluate a possible correlation between buccolingual inclination with their respective interdental width. METHODS: The sample consisted of 37 boys and 41 girls untreated orthodontic patients averaging 13.2±0.96 years. A line tangent to the inferior border of the mandible and the long axis of the tooth measured buccolingual inclination. Intercanine and intermolar widths were measured on casts. RESULTS: Reliability (ICC) values were >0.94. The mean mandibular canine inclination was 98.0±4.1°, with mean width 26.0±2.2 mm. The mean mandibular molar inclination was 74.6±4.7° with mean width 40.9±2.7 mm. First molar inclination of Class II molar subjects (73.7±4.2°) was significantly less (p≤0.05) than of Class I subjects (75.6±4.9°). There were low correlations between interdental width and buccolingual inclination. CONCLUSIONS: A practical and reliable method to measure buccolingual inclination of mandibular canines and first molars is here described using Cone Beam Computed Tomography and a commercially available DICOM software.
Authors: Iury Oliveira Castro; Bruno Frazão Gribel; Ana Helena Gonçalves de Alencar; José Valladares-Neto; Carlos Estrela Journal: J Orofac Orthop Date: 2018-07 Impact factor: 1.938