IADR Abstract Archives
Etiology of Maxillary Palatal Canine Impaction. A Systematic Review.
Objectives: The aim of this study was to assess, with an evidence-based medicine approach, the etiology for Maxillary Palatal Canine Impaction (MPCI).
Methods: The electronic databases PubMed, Cochrane Library, Embase, EBSCOhost, ScienceDirect, Bireme and Scielo between 1960 and 2018, were searched including all languages. Observational analytical studies were identified. The data were collected and extracted by two independent authors. The selection process was based on the PRISMA guidelines. The Newcastle-Ottawa Scale (NOS) and the Grading of Recommendations Assessment Tool, Development and Evaluation (GRADE) were used to verify the quality of the evidence.
Results: Among 4588 records were screened, only 26 were included in this systematic review. According to the design, 1 cohort and 25 case-control studies were identified. None of the reviewed articles obtained the highest score based on Newcastle-Ottawa Scale. The quality of evidence was low to moderate, with an average score of 4.46 and a median of 4.0. Most studies were exposed to a high risk of bias analyzed by GRADE. Maxillary Palatal Canine Impaction could be associated mainly with shape anomalies or absence of lateral incisor, secondly with altered calcification of Sella Bridge, and finally with Angle`s class II div 2 malocclusion, upper incisor retroinclination, reduced tooth widths and greater maxillary transverse dimensions.
Conclusions: Based on the results of this study, the evidence available is insufficient to establish definitive conclusions among dentoalveolar, skeletal and dental anomalies with MPCI. To establish the etiology of MPCI requires cohort and high-quality studies. However, shape anomalies or absence of the lateral incisors seems to be an important etiologic factor.
Methods: The electronic databases PubMed, Cochrane Library, Embase, EBSCOhost, ScienceDirect, Bireme and Scielo between 1960 and 2018, were searched including all languages. Observational analytical studies were identified. The data were collected and extracted by two independent authors. The selection process was based on the PRISMA guidelines. The Newcastle-Ottawa Scale (NOS) and the Grading of Recommendations Assessment Tool, Development and Evaluation (GRADE) were used to verify the quality of the evidence.
Results: Among 4588 records were screened, only 26 were included in this systematic review. According to the design, 1 cohort and 25 case-control studies were identified. None of the reviewed articles obtained the highest score based on Newcastle-Ottawa Scale. The quality of evidence was low to moderate, with an average score of 4.46 and a median of 4.0. Most studies were exposed to a high risk of bias analyzed by GRADE. Maxillary Palatal Canine Impaction could be associated mainly with shape anomalies or absence of lateral incisor, secondly with altered calcification of Sella Bridge, and finally with Angle`s class II div 2 malocclusion, upper incisor retroinclination, reduced tooth widths and greater maxillary transverse dimensions.
Conclusions: Based on the results of this study, the evidence available is insufficient to establish definitive conclusions among dentoalveolar, skeletal and dental anomalies with MPCI. To establish the etiology of MPCI requires cohort and high-quality studies. However, shape anomalies or absence of the lateral incisors seems to be an important etiologic factor.