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Short-term treatment effects produced by rapid maxillary expansion evaluated with computed tomography: A systematic review with meta-analysis

대한치과교정학회지 2020년 50권 5호 p.314 ~ 323
Lo Giudice Antonino, Spinuzza Paola, Rustico Lorenzo, Messina Gabriele, Nucera Riccardo,
소속 상세정보
 ( Lo Giudice Antonino ) - University of Catania School of Dentistry Section of Orthodontics
 ( Spinuzza Paola ) - University of Messina School of Dentistry Section of Orthodontics
 ( Rustico Lorenzo ) - University of Messina School of Dentistry Section of Orthodontics
 ( Messina Gabriele ) - University of Messina School of Dentistry Section of Orthodontics
 ( Nucera Riccardo ) - University of Messina School of Dentistry Section of Orthodontics

Abstract


Objective: To identify the available evidence on the effects of rapid maxillary expansion (RME) with three-dimensional imaging and provide meta-analytic data from studies assessing the outcomes using computed tomography.

Methods: Eleven electronic databases were searched, and prospective case series were selected. Two authors screened all titles and abstracts and assessed full texts of the remaining articles. Seventeen case series were included in the quantitative synthesis. Seven outcomes were investigated: nasal cavity width, maxillary basal bone width, alveolar buccal crest width, alveolar palatal crest width, inter-molar crown width, inter-molar root apex width, and buccopalatal molar inclination. The outcomes were investigated at two-time points: postexpansion (2?6 weeks) and post-retention (4?8 months). Mean differences and 95% confidence intervals were used to summarize and combine the data.

Results: All the investigated outcomes showed significant differences postexpansion (maxillary basal bone width, +2.46 mm; nasal cavity width, +1.95 mm; alveolar buccal crest width, +3.90 mm; alveolar palatal crest width, +3.09 mm; intermolar crown width, +5.69 mm; inter-molar root apex width, +2.85 mm; and dental tipping, +3.75°) and post-retention (maxillary basal bone width, +2.21 mm; nasal cavity width, +1.55 mm; alveolar buccal crest width, +3.57 mm; alveolar palatal crest width, +3.32 mm; inter-molar crown width, +5.43 mm; inter-molar root apex width, +4.75 mm; and dental tipping, 2.22°) compared to pre-expansion.

Conclusions: After RME, skeletal expansion of the nasomaxillary complex was greater in most caudal structures. Maxillary basal bone showed 10% post-retention relapse. During retention period, uprighting of maxillary molars occurred.

키워드

Rapid maxillary expansion; Computed tomography; Systematic review; Meta-analysis

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