Thte review of the percentage of impacted maxillary incisors that successfully erupt after surgical removal of supernumerary teeth included 15 studies. With the exception of one study all were retrospective with meta-analysis indicating a mean eruption success of 57.6% (95%CI; 47.8 to 67.0%). However the certainty of the evidence is very low to low.
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This scoping review of the literature comparing orthodontic treatment undertaken with and without the extraction of premolar teeth included 399 articles. Most study reports were of low methodological quality, and further reviews are unlikely to provide new information. Researchers should focus on high quality prospective primary studies that include outcomes of imortance to patients.
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This review of factors influencing eruption of teeth associated with dentigerous cysts only included 4 small single-centre retrospective studies providing very low certainty evidence.
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This review of the local or systemic signs and symptoms during the eruption of the primary teeth included 16 observational studies only 5 of which were at low risk of bias. The overall prevalence of signs and symptoms associated with primary tooth eruption in children between 0 and 36 months was 70.5% (95%CI; 54.1-84.6).
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This review of the the effects and sequela of early extraction of first permanent molars included 11 observational studies providing limited quality evidence of the consequences of early extraction. High quality prospective studies are needed.
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4 RCTs were included in this review of interceptive primary canine extraction. They provide some limited evidence that extractions may facilitate permanent canine eruption but the study quality is low.
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