I类拥挤、前倾错牙合与I类正常牙合的牙体大小和牙弓尺寸的对比研究
Comparative Study of Tooth Size and Arch Dimensions in Class I Crowded, Proclined Malocclusion and Class I Normal Occlusion.
作者信息
Devakrishnan Dhayanithi, Gnansambandam Vimala, Kandasamy Saravanan, Sengottuvel Nagalakshmi, Kumaragurubaran Preethi, Rajasekaran Maivizhi
机构信息
Department of Orthodontics, Vivekanandha Dental College for Women, Tiruchengode, Tamil Nadu, India.
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.
出版信息
J Pharm Bioallied Sci. 2021 Jun;13(Suppl 1):S783-S787. doi: 10.4103/jpbs.JPBS_781_20. Epub 2021 Jun 5.
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.
目的
本研究旨在比较牙弓尺寸和牙齿大小对牙列拥挤和牙前倾等错牙合畸形影响程度的大小。
材料与方法
选取90个治疗前模型，分为三组，即非拥挤组（A组）、拥挤组（B组）和牙前倾组（C组）。测量指标包括：（1）每侧牙弓上各牙（除第二、三磨牙外）的最大近远中宽度；（2）颊侧尖牙间及磨牙间宽度；（3）舌侧尖牙间及磨牙间宽度；（4）牙弓周长；（5）牙弓长度。
结果
拥挤组和牙前倾组的牙齿近远中尺寸更大。拥挤组上颌尖牙间宽度和磨牙间宽度均减小。上颌和下颌牙弓周长及牙弓长度在牙前倾组更大。
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