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Year : 2021  |  Volume : 13  |  Issue : 5  |  Page : 783-787

Comparative study of tooth size and arch dimensions in class I crowded, proclined malocclusion and class I normal occlusion

1 Department of Orthodontics, Vivekanandha Dental College for Women, Tiruchengode, Tamil Nadu, India
2 Deparment of Orthodontics, Tamil Nadu Government Dental College, Chennai, Department of Oral and Maxillofacial Surgery, Vinayaka Mission's Sankarachariyar Dental College, Salem, Tamil Nadu, India

Correspondence Address:
Dhayanithi Devakrishnan
Department of Orthodontics, Vivekanandha Dental College for Women, Tiruchengode, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jpbs.JPBS_781_20

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Aim: The objectives are to compare the extent and to find whether it is arch dimension or tooth size that contributes to a greater extent to malocclusions such as dental crowding and proclination. Materials and Methods: A total of 90 pretreatment models were selected and divided into three groups, namely uncrowded (Group-A), crowded (Group B), and proclination (Group-C). Measurements obtained were: (1) The largest mesiodistal width of each tooth on each arch (except the second and third molars), (2) Buccal inter-canine and inter-molar widths, (3) Lingual inter-canine and inter-molar widths, (4) Arch perimeters, and (5) Arch length. Results: The mesiodistal teeth dimensions were higher in crowded and proclination group. Both inter canine width and inter molar width of maxilla were reduced in crowded group. Maxillary and mandibular arch perimeter and arch lengths were higher proclination group.

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