ABSTRACT
Introduction: The objective of this systematic review was to answer the question: Does the intraradicular post transfixed in the dental crown increases the fracture resistance of weakened and directly restored teeth? Methods: Electronic databases (MEDLINE/PubMed, LILACS, SCOPUS, EMBASE, Scientific Electronic Library Online - SCIELO, and Central Register of Controlled Trials - CENTRAL) were searched until March 2021, without language or year restriction. Grey literature was also searched through Google scholar and OpenGrey repository. Only in vitro stud-ies were included that evaluated the influence of the use of intraradicular post trans-fixed in the crown in the buccopalatal/lingual direction in the fracture resistance of the dental crown. Relevant results were summarized and evaluated. The risk of bias was also assessed in the studies. Results: Initial screening of databases resulted in 249 studies, of which 109 were excluded for being duplicates. Of 140 eligible pa-pers, fourteen studies met the inclusion criteria and were selected for full-text read-ing. Of these, two studies were excluded for not having access to the full article. All selected articles were classified as low risk of bias. Conclusion: Based on the studies, it is possible to conclude that the use of a transfixed post in the crown increases the fracture resistance of weakened and directly restored teeth.
Subject(s)
Humans , Dentistry, Operative , Systematic Review , Tooth Crown , Dental Stress AnalysisABSTRACT
O estudo revisou a literatura existente com o objetivo de comparar a percepção de uso, qualidade e tempo do preparo químico mecânico de canais radiculares realizado por estudantes de graduação em Odontologia com instrumentos de níquel-titânio (NiTi) e aço inoxidável. Para isso, as bases de dados eletrônicas PubMed, LILACS, Scopus, Embase,SciELOe CENTRALforam acessadas para verificar e selecionar estudos relacionados com a questão de pesquisa publicados até janeiro de 2021. Estudos laboratoriaisque compararam o uso de instrumentos de NiTi com aço inoxidável por alunos de graduação em Odontologia foram avaliados. Dois revisores independentemente selecionaram os estudos, coletaram os dados e analisaram o risco de viés.Dos 92 estudos potencialmente relevantes, 10 atenderam aos critérios de inclusão para análise de texto completo e, posteriormente, incluídos na revisão sistemática. O risco de viés foi considerado alto em todos os estudos. Instrumentos de NiTi apresentarammaior preferência e melhor percepção por estudantes de graduação em Odontologia, menor tempo e melhor qualidade do preparo químico mecânico, commenor ocorrência de acidentes como degraus, transporte e desvios de canal, apesar de estarem associados à maior ocorrência de fratura de instrumentos (AU).
This literature review aimed to compare undergraduate dental students' perceptions regarding the use of nickeltitanium (NiTi) and stainless steel instruments for the mechanical-chemical preparation of root canals, focusing on quality and time. PubMed, LILACS, Scopus, Embase, SciELO,and CENTRAL electronic databaseswere accessed to verify and select related studies published as of January 2021. Laboratory studies comparing the use of NiTi instruments with stainless steel instruments by undergraduate dental students were evaluated. Two reviewers independently selected the studies, collected the data, and analyzed the risk of bias. Out of the 92 potentially relevant studies, 10 met the inclusion criteria for a full-text analysis and were subsequently included in the systematic review. The risk of bias was considered high in all studies. Undergraduate dental students demonstrated a greater preference for and better perception of NiTi instruments. NiTi instruments also resulted in less time for and better qualityof the mechanical-chemical preparation. These were associated with a lower incidence of accidents, such as canal ledges, transportations, and deviations, as well as a higher incidence of instrument fractures (AU).
