Dental and skeletal features of patients with congenitally missing maxillary lateral incisors

سال انتشار: 1390
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 96

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شناسه ملی سند علمی:

JR_ORTHO-6-1_003

تاریخ نمایه سازی: 25 بهمن 1400

چکیده مقاله:

Aim: the prevalence of maxillary missing lateral incisor (MMLI) is ۱-۲% which is responsible for ۲۰% of all missing teeth. Increased knowledge of causes and clinical manifestations of cases with this situation can be helpful in their diagnosis and treatment planning. The aim of the present study was to determine dental and skeletal features of patients with missing of maxillary lateral incisors. Materials and methods: The material consisted of pre-treatment dental casts and cephalograms of ۲۶ patients (۱۴ females and ۱۲ males with average age of ۱۷.۵) with unilateral or bilateral MMLI. The following parameters were measured on the dental casts: the maxillary and mandibular intercanine width (ICW) and intermolar width (IMW), overjet, overbite, missing or anomalous of other teeth. Parameters that were measured on cephalogram including: SNA, SNB and ANB angle and Wits. The parameters were finally compared to a control group with normal occlusion by means of paired t-test. Results: Eight subjects out of ۲۶ patients with MMLI had bilateral missing and from ۱۸ subjects with unilateral missing, ۶۶.۶۷% (۱۲ subjects) had lateral missing on the right side. MMLI was associated with other anomalous or congenital tooth absence in ۱۲ subjects. In comparison with control group, the overjet was significantly lesser (p<۰.۰۵) and upper and lower ICW were smaller. Both ANB angle and Wits were significantly decreased in lateral missing group ((p<۰.۰۵). Conclusion: Missing of maxillary lateral incisor was highly correlated with other tooth anomalies. Most of patient with this situation had skeletal and dental Class III tendency.

کلیدواژه ها:

Hypodontia ، Lateral Aplasia ، Maxillary Missing Lateral Incisor

نویسندگان

Tahura Etezadi

Postgraduate student of orthodontics, Faculty of Dentistry, Tehran University of Medical Sciences. Tehran, Iran

Fariba Esmaeilnia Shirvania

Postgraduate student of orthodontics, Faculty of Dentistry, Tehran University of Medical Sciences. Tehran, Iran

Atefe Saffarshahroudia

Postgraduate student of orthodontics, Faculty of Dentistry, Tehran University of Medical Sciences. Tehran, Iran