Abstract Currently, there is no consensus on the indications and clinical performance of implant-supported overdentures (IODs) involving computer-aided design and manufacturing (CAD-CAM) bars. Objective: To evaluate the performance of IODs involving CAD-CAM bars. Methodology: A comprehensive search of studies published until May 2023 was conducted in many databases, including PubMed/MEDLINE, Web of Science, Cochrane Library, and SciELO, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The population, intervention, comparison, outcome (PICO) question was: “How do IODs retained by bars fabricated by CAD-CAM technology perform in daily clinical practice?” The meta-analysis included clinical studies based on effect size and a two-tailed null test with a 95% confidence interval (CI). Results: Ten studies were included in the meta-analysis. Among them, nine reported a 100% implant survival rate for all CAD-CAM milled bars. Complications were reported in two studies with CAD/CAM-milled titanium bars, and one study reported more fractures in soldered gold bars used in maxillary rehabilitation. However, no fractures were observed in IODs retained by PEEK and zirconia bars. According to six studies, biological complications, including peri-implantitis, were minimal in the BioHPP and PEEK bar groups, while no cases were reported in the titanium or zirconia bar groups. CAD-CAM-milled zirconia bars had higher plaque and bleeding indices compared with titanium bars, as evidenced by findings from five studies. All four studies that evaluated Oral Health Impact Profile (OHIP) scores showed a positive effect of IODs retained by CAD-CAM milled titanium bars on quality of life. Patient satisfaction and acceptance by prosthodontists were significantly high, according to the results of five studies. Conclusion: Overdentures retained with CAD-CAM milled titanium bars show great potential for use in daily clinical practice. Moreover, patient and practitioner satisfaction was very high when this method was used.

RESUMO Objetivo: A pneumonia associada à ventilação mecânica (PAVM) é uma infecção frequente em UTI. No entanto, essa infecção pode ser evitada através de protocolos de cuidados orais. O objetivo deste estudo foi comparar a eficiência de protocolos de higiene bucal (escovação e procedimentos clínicos) aliados ao uso de clorexidina (grupo intervenção) com a de protocolos que fazem uso somente de clorexidina (grupo controle) na diminuição da prevalência da PAVM em pacientes adultos (≥ 18 anos) internados em UTI sob VM. Métodos: Nesta revisão sistemática e meta-análise, várias bases de dados nacionais e internacionais foram utilizadas para a identificação e seleção de estudos e literatura cinza seguindo critérios de elegibilidade. Resultados: Foram incluídos seis estudos, envolvendo 1.276 pacientes. Após a classificação dos estudos, três apresentaram baixo risco de viés, dois apresentaram risco de viés alto, e o risco foi incerto em um; entre os seis domínios avaliados houve predomínio de baixo risco de viés em cinco deles. Os resultados para riscos aleatórios foram semelhantes em direção e magnitude estatística - qui-quadrado = 6,34; diferença de risco: −0,06 (IC95%: −0,11 a −0,02); I2 = 21%; p = 0,007. Houve diminuição na prevalência de PAVM no grupo intervenção (n = 1.276) incluídos na meta-análise. Conclusões: Protocolos que incluem a remoção mecânica do biofilme associada ao uso de clorexidina podem reduzir a incidência de PAVM em pacientes internados em UTI sob VM.

ABSTRACT Objective: In ICU patients on mechanical ventilation (MV), ventilator-associated pneumonia (VAP) is a common infection. However, such infection can be prevented through oral care protocols. The objective of this study was to compare the efficiency of the use of chlorhexidine and oral hygiene protocols (brushing and clinical procedures) with that of the use of chlorhexidine alone (intervention group and control group, respectively) in decreasing the prevalence of VAP in patients ≥ 18 years of age admitted to the ICU and requiring MV. Methods: In this systematic review and meta-analysis, studies were identified through searches of various national and international databases, as well as of the gray literature, and were selected in accordance with eligibility criteria. Results: We evaluated six studies, involving a collective total of 1,276 patients. We classified the risk of bias as low in three studies, high in two, and uncertain in one; among the six risk domains evaluated, a low risk of bias was predominant in five. The results for random risks were similar in terms of direction and statistical magnitude-chi-square = 6.34; risk difference: −0.06 (95% CI: −0.11 to −0.02); I2 = 21%; p = 0.007. There was a decrease in the prevalence of VAP in the intervention group (n = 1,276) included in the meta-analysis. Conclusions: Protocols that include the mechanical removal of oral biofilm in combination with the use of chlorhexidine can reduce the incidence of VAP among ICU patients requiring MV.

OBJECTIVE: The aims of this study were to examine the trans- and postoperative systemic characteristics of patients undergoing dental implant surgery and to investigate the relationship between pre- and post- surgery anxiety levels. MATERIAL AND METHODS: Thirty-nine patients were analyzed in 3 call centers to determine anxiety levels, pain levels, and preoperative and postoperative histories using the State-Trait (STAI) questionnaire. RESULTS: A total of 93 dental implants were installed, with a success rate of 100%. The most frequently reported systemic disease was hypertension. There was a significantly higher rate of effective clamping (torque) to the mandibular bone than to the maxillary bone. The association between postoperative surgical complications and longer operative time was not significant, but there was a significant correlation between the alteration of mouth opening and daily routine activities and a significant decrease in anxiety levels between the day of surgery and the postoperative time point (p =0.006). CONCLUSION: A longer surgical time was associated with surgery-related complications and with a higher anxiety index on the preoperative evaluation.