S M Balaji1. 1. Oral and Maxillofacial Surgeon, Chennai, India ; Balaji Dental & Craniofacial Hospital, 30, KB Dasan Road, Teynampet Chennai-18, India.
Abstract
BACKGROUND: Abnormality of tooth formation and position is often encountered in mandibular growth with TMJ ankylosis resulting from mandibular condylar fractures. Literature is scarce is in this phenomenon and remains largely anecdotal AIM AND OBJECTIVES: To study the relationship of teeth formation and position, to the age at which trauma occurred resulting in a mandibular unilateral condylar ankylosis. MATERIAL AND METHODS: Retrospective qualitative analysis of orthopantomograms from archives of cases diagnosed with mandibular unilateral condylar ankylosis. PREDICTOR VARIABLE: Position of mandibular 2nd premolar, 1st, 2nd, 3rd molar, age at which trauma occurred OUTCOME VARIABLES: Degree of impaction or normally erupted RESULT: In the ipsilateral side of trauma, 66.67% of 2nd premolars, 44.4% of 1st molar, 88.89% of 2nd molar and 44.4% of 3rd molars were abnormal, while in the contralateral normal side and 22.2% of 3rd molar exhibited abnormality. DISCUSSION: In mandible, post condylar fracture growth brings about deficiency in the length of corpus. The deficiency of length brings teeth abnormality - in terms of its growth and eruption. The abnormality in the position of teeth is related to the age at which trauma occurred. CONCLUSION: Evidence of tooth formation and eruption being affected in mandibular growth after mandibular condylar fractures and this phenomenon appears to be age related.
BACKGROUND: Abnormality of tooth formation and position is often encountered in mandibular growth with TMJ ankylosis resulting from mandibular condylar fractures. Literature is scarce is in this phenomenon and remains largely anecdotal AIM AND OBJECTIVES: To study the relationship of teeth formation and position, to the age at which trauma occurred resulting in a mandibular unilateral condylar ankylosis. MATERIAL AND METHODS: Retrospective qualitative analysis of orthopantomograms from archives of cases diagnosed with mandibular unilateral condylar ankylosis. PREDICTOR VARIABLE: Position of mandibular 2nd premolar, 1st, 2nd, 3rd molar, age at which trauma occurred OUTCOME VARIABLES: Degree of impaction or normally erupted RESULT: In the ipsilateral side of trauma, 66.67% of 2nd premolars, 44.4% of 1st molar, 88.89% of 2nd molar and 44.4% of 3rd molars were abnormal, while in the contralateral normal side and 22.2% of 3rd molar exhibited abnormality. DISCUSSION: In mandible, post condylar fracture growth brings about deficiency in the length of corpus. The deficiency of length brings teeth abnormality - in terms of its growth and eruption. The abnormality in the position of teeth is related to the age at which trauma occurred. CONCLUSION: Evidence of tooth formation and eruption being affected in mandibular growth after mandibular condylar fractures and this phenomenon appears to be age related.