RESUMO
Background: To compare the effect of conventional brackets and self-ligating brackets on periodontal health. Material and Methods: A search of information up to October 2022 was carried out in the following electronic databases: PubMed/MEDLINE, Cochrane Library, Scopus, Web of Science (WoS), EMBASE, SciELO and Google Scholar. We included studies that were randomised clinical trials, dealing with conventional brackets and self-ligating brackets and their effect on periodontal health, with no language restriction and no time limit. The Risk of Bias 2 (Rob 2.0) tool was used to determine the risk of bias of the included studies. The information selected from the studies was entered and analysed with RevMan 5.3, using the mean and standard deviation with a 95% confidence interval as a measure. Finally, an analysis was performed using the GRADE system to classify the quality of the evidence and grade the strength of the recommendation. Results: The preliminary search yielded a total of 399 articles, discarding those that did not meet the selection criteria, leaving only 13 articles. The effect of conventional and self-ligating brackets on periodontal health was determined using periodontal probing depth (PPD), plaque index (PI), gingival index (GI) and bleeding index (BI), showing advantages of self-ligating brackets in PI and BI, and no differences compared to self-ligating brackets in PPD and GI. Conclusions: Self-ligating brackets probably better preserve periodontal health compared to conventional brackets regarding plaque accumulation and bleeding on probing. Key words:Conventional brackets, self-ligating brackets, periodontal health, orthodontic treatment, systematic review, meta-analysis.
RESUMO
Background: Temporomandibular disorders (TMD) are related to a series of clinical manifestations that appear in the form of pain. Currently, there is controversy about the appearance of TMDs after orthodontic treatment. Therefore, the objective of the present study was to determine the association between orthodontic treatment and the occurrence of Temporomandibular Disorders (TMD). Material and Methods: A bibliographic search was carried out until April 2022, in the following electronic databases: Pubmed/Medline, Scopus, Scielo, Google Scholar and Web of Science. We included studies that were case-control and cohort studies, dealing with the association between orthodontic treatment and TMD, in English and Spanish, and with no time limit. The Newcastle-Ottawa scale was used to assess risk in the included studies. In addition, RevMan 5.3 was considered for meta-analysis, using as a measure the ODDS ratio in a random-effects model with a 95% confidence interval. Results: The preliminary search yielded a total of 686 articles, discarding those that did not meet the selection criteria, leaving only 6 articles. These studies reported that there is a significant association between orthodontic treatment and the occurrence of TMD, equivalent to an ODDS ratio of 1.84 with a confidence interval of 1.19-2.83. Conclusions: It is concluded that there is an association between orthodontic treatment and the occurrence of TMD, therefore, a person undergoing orthodontic treatment is up to 1.84 times more likely to develop TMD. Key words:Orthodontic treatment, temporomandibular disorders, orthodontics, cases and controls, cohorts, review, Meta-Analysis.
RESUMO
Objective: To determine the erosive effect of pieces of permanent teeth exposed to non-distilled alcoholic beverages. Material and Methods: This study takes a quantitative approach, with an explanatory scope, descriptive and correlational, with a pure experimental design. The sample consisted of 45 premolar permanent teeth, which were randomly allocated to five sample groups. Every sample group was submerged in dark beer Cuzqueña Negra, wheat beer Cuzqueña de Trigo, lager beer Cerveza Cristal, lager beer Pilsen Callao and physiological saline solution; every solution had a quantity of 110 mL. The experiment was performed for five minutes, with three repetitions every 12 hours over a period of 70 days. The sampling was performed every seven days, using an analytical scale and a data sheet. Results: The average weight loss of dental pieces put in dark beer Cuzqueña Negra (pH 4.0) was 239.4456 mg. In lager beer Pilsen Callao (pH 4.6), it was 146.7867 mg. In lager beer Cerveza Cristal (pH 3.7), it was 131.3567 mg. In wheat beer Cuzqueña de Trigo (pH 4.5), it was 121.7122 mg. Lastly, in physiological saline solution (pH 6.8), it was 14.3311 mg. When applied to the sample, the statistical test Student's t-test resulted in a value of p≈0.000 (p<0.05). Conclusion: Non-distilled alcoholic beverages caused erosive effects in the pieces of permanent teeth.
Objetivo: : Determinar el efecto erosivo en dientes permanentes expuestos a bebidas alcohólicas no destiladas. Material y Métodos: Este estudio tiene un enfoque cuantitativo, con alcance explicativo, descriptivo y correlacional, con un diseño puramente experimental. La muestra consistió en 45 dientes permanentes premolares, que fueron asignados aleatoriamente a cinco grupos de muestra. Cada grupo de muestra se sumergió en cerveza Cuzqueña Negra, cerveza Cuzqueña de Trigo, Cerveza Cristal, cerveza Pilsen Callao y solución salina fisiológica; cada solución tenía una cantidad de 110 mL. El experimento se realizó durante cinco minutos, con tres repeticiones cada 12 horas durante un período de 70 días. El muestreo se realizó cada siete días, utilizando una escala analítica y una hoja de datos. Resultados: La pérdida de peso promedio de las piezas dentales colocadas en cerveza negra Cuzqueña Negra (pH 4,0) fue de 239,4456 mg. En la cerveza Pilsen Callao (pH 4,6), fue de 146,7867 mg. En la cerveza Cerveza Cristal (pH 3,7) fue de 131,3567 mg. En cerveza Cuzqueña de Trigo (pH 4,5), fue de 121,7122 mg. Por último, en suero fisiológico (pH 6,8) fue de 14,3311 mg. Cuando se aplicó la prueba estadística t de Student a la muestra dio como resultado un valor de p?0,000 (p<0,05). Conclusion: Las bebidas alcohólicas no destiladas causaron efectos erosivos en dientes permanentes.
