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Clin Cosmet Investig Dent ; 12: 515-523, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33235510


Purpose: This study aimed to evaluate oral health knowledge, attitudes, and behaviors among a sample of senior students at King Abdulaziz University (KAU), and to assess differences among these factors between genders. Methods: A total of 1177 senior university students at KAU were included in this cross-sectional study. Participants were selected by stratified random sampling. KAU has three main streams categorized by field of study. One faculty was randomly selected from each stream. Information regarding oral health knowledge, attitudes, and behaviors was collected with a validated self-administered questionnaire. A knowledge score was calculated, and predictors of oral health knowledge were assessed by linear regression. Results: In general, the mean oral health knowledge score of females (8.1 ± 1.8) was significantly higher than that of males (7.2 ± 2.1) out of 13. Relative to males, females reported a greater frequency of teeth cleaning and of using a toothbrush with proper technique (p < 0.001). Females were also more likely to have ever visited a dentist than males (95% and 86%, respectively). The linear regression model revealed that students in non-medical faculties and those who were not shown how to brush their teeth by a dentist had lower oral health knowledge scores, than their counterparts. Students older than 22 years and females were more likely to have higher oral health knowledge scores than were their counterparts. Conclusion: Oral health knowledge was relatively low among the university students, but females showed better oral health knowledge and behaviors than males did.

J Esthet Restor Dent ; 32(7): 726-733, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32886852


OBJECTIVE: To evaluate the microtensile bond strength of four dental computer-aided design/computer-aided manufactured (CAD/CAM) ceramics after application of four different surface treatments. MATERIALS AND METHODS: Four dental CAD/CAM ceramics were tested: feldspathic ceramic (VITABLOCKS-Mark II), polymer-infiltrated ceramic network (VITA ENAMIC), zirconia-reinforced lithium silicate (VITA SUPRINITY), and yttria-stabilized zirconia (VITA YZ T). Four surface treatments were applied: no treatment, 5% hydrofluoric acid-etching, airborne particle abrasion, and tribochemical silica coating. The ceramic blocks were repaired with nanohybrid composite (Tetric N-Collection). Sixteen test groups of 12 specimens were prepared. After thermocycling, microtensile bond testing was performed. The microtensile strengths values were statistically analyzed using two-way analysis of variance and Tukey's post-hoc test. RESULTS: Repaired feldspathic and resin polymer-infiltrated ceramic network ceramics demonstrated superior microtensile bond strengths compared to zirconia-reinforced lithium silicate and yttria-stabilized zirconia. Etched feldspathic and polymer-infiltrated ceramic network ceramics had higher bond strength than the untreated groups. Surface treatments did not affect the bond strength of zirconia-reinforced lithium silicate and yttria-stabilized zirconia with the exception of etching, which reduced the bond strength of yttria-stabilized zirconia. CONCLUSION: Feldspathic ceramic and polymer-infiltrated ceramic network were repaired with dental composite after surface etching with hydrofluoric acid. Repair of zirconia-reinforced lithium silicate and yttria-stabilized zirconia did not demonstrate promising results. CLINICAL SIGNIFICANCE: Repair of feldspathic ceramic and polymer-infiltrated ceramic network restorations may be a cost-effective means to promote the longevity of dental restorations. However, zirconia and zirconia-reinforced lithium disilicate restorations do not offer such an option.

Recubrimiento Dental Adhesivo , Cerámica , Diseño Asistido por Computadora , Porcelana Dental , Análisis del Estrés Dental , Ensayo de Materiales , Cementos de Resina , Propiedades de Superficie , Circonio
J Contemp Dent Pract ; 20(7): 867-872, 2019 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-31597811


AIMS: This article describes the methodologies used in the dental literature and described how these approaches have changed over time. MATERIALS AND METHODS: Thirty-three ISI peer-reviewed journals were included in the analyses. Data were extracted independently by 11 investigators and in duplicate. Any differences in the results were resolved via discussion or by a third reviewer when necessary. Data were collected regarding the methodology used in the article, and dental specialty related to different study designs. In the case in which more than one study design or specialty was reported, reviewers were trained to identify the main methodology/specialty. RESULTS: The majority (36.96%) used a case report (CR) as the primary methodology, followed by a clinical trial (CT) (18.21%) or randomized CT (15.11%). The least used methodologies included a cohort (COH) study (6.07%) or a systematic review (SA)/meta-analysis (MA) (6.73%). Periodontology published the highest number of case controls (CCs) (46.8%), randomized CTs (RCTs) (29.9%), cross-sectional (CS) studies (26.0%), SRs/MAs (19.8%), and CTs (17.1%). Oral and maxillofacial surgery published the highest number of CRs/case series (54.5%) and COH studies (30.5%), whereas operative dentistry published the lowest number of CRs/case series (0.7%), CCs (2.9%), and SRs/MAs (2.3%). CRs/case series retain the highest number of publications across all time points in the dental literature overall. CONCLUSION: Our results indicate an improvement in the types of research and the pyramid of evidence, which will help in applying evidence-based dentistry (EBD) in clinical decision-making. CLINICAL SIGNIFICANCE: Types of studies used in the dental field are not yet investigated. Thus, little is known about the common study design types in dental literature. This can affect the decision made regarding technique, risk factors, prevention, or treatment.

Odontología , Edición , Estudios de Casos y Controles , Estudios Transversales , Metaanálisis como Asunto , Edición/tendencias , Proyectos de Investigación , Revisiones Sistemáticas como Asunto