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Published on: February 23, 2024
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Rotations of teeth-a systematic review.
Ramya Parthiban1, Vignesh Kailasam1, Nivetha Shree Venkatasamy1
1Sri Ramachandra Medical College and Research Institute, Sri Ramachandra Institute of Higher Education and Research, Chennai, India.
Frontiers in Oral Health
|December 23, 2024
Summary
This review found no adequate classification system for assessing tooth rotation, especially in anterior and mandibular teeth. Standardization and clinical utility are needed for existing posterior tooth rotation assessment systems.
Area of Science:
- Dentistry
- Orthodontics
- Dental Assessment
Background:
- Tooth rotation assessment lacks standardized methods, with limited research on rotation extent, direction, and reliability.
- Existing classification systems for tooth rotation require comprehensive analysis for clinical applicability.
Purpose of the Study:
- To systematically review classification systems for rotated teeth.
- To assess tooth rotation in anterior and posterior teeth, its clinical applicability, and impact on retention and relapse.
Main Methods:
- A comprehensive search of six databases (PubMed, Scopus, Ovid, LILACS, Web of Science, Cochrane CENTRAL) was conducted up to March 2024.
- Included retrospective studies assessing tooth rotation in any age group, excluding patients with prior orthodontic treatment or dental anomalies.
- Ten studies were included, with nine providing quantitative outcomes; risk of bias was assessed using the Newcastle-Ottawa scale.
Main Results:
- Incisors showed the highest rotation (7.4°-20.2°), followed by premolars/canines (3.3°-9.2°), and molars (0.8°-7.4°).
- Upper molar rotation was higher in dental Class II patients (78.6° mesial angle).
- No significant gender differences or statistical differences in molar rotation between sides or arches were found.
Conclusions:
- There is a lack of adequate classification systems for assessing anterior and mandibular tooth rotation.
- A universally accepted tooth rotation classification system with a common reference line is necessary.
- Standardization and clinical utility improvements are needed for existing posterior tooth rotation assessment systems.
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