Retention preferences and protocols of Brazilian orthodontists: a cross-sectional study.

Objective: The aim of this study was to evaluate the orthodontic retention protocols used by Brazilian orthodontists.

Methods: This cross-sectional study included 693 orthodontists who answered a web-based questionnaire with 22 questions regarding the participants' characteristics, their retainers' prescriptions, follow-up duration, and appliance fabrication.

Results: A 20.

Long-term Evaluation of Bonding Performance of Universal Adhesives based on Different Dentinal Moisture Levels.

Purpose: To evaluate the microtensile bond strength (μTBS) and silver nitrate uptake (SNU) of three universal adhesives used in etch-and-rinse (ER) and self-etch (SE) modes on dry, wet, and oversaturated dentin surfaces after 24 h and 1 year of water storage. The morphology of the hybrid layer (MHL) and the degree of conversion (DC) were also evaluated.

Materials And Methods: Human molars were divided into 36 groups according to combinations of the following variables: (i) universal adhesives (Ambar Universal APS [AMB], Prime&Bond Active [PBA], Scotchbond Universal Adhesive [SBU]), (ii) adhesive strategies (ER or SE), (iii) moisture level (dry, wet, or oversaturated dentin surface), and (iv) storage time (24 h or 1 year).

Does the use of face masks during the COVID-19 pandemic impact on oral hygiene habits, oral conditions, reasons to seek dental care and esthetic concerns?

Background: To evaluate the impact of the use of face masks on oral hygiene habits; oral conditions self-perception; reasons to seek dental treatment; and esthetic concerns.

Material And Methods: 1346 participants answered a web-based survey with questions related to the aims of the study. Descriptive statistic was performed and the responses were analyzed with chi-square test and regression analysis.

The Use of Facemasks During the COVID-19 Pandemic by the Brazilian Population.

Objective: To evaluate the use of facemasks by the Brazilian population during the COVID-19 pandemic.

Materials And Methods: This cross-sectional study involved 1277 participants who answered a web-based open survey with questions about the use of facemasks during the COVID-19 pandemic. Descriptive statistics with percentages was performed, and the responses were analyzed with chi-square and independent t-tests.

Effectiveness of two thermal activated orthodontic archwire sequences based on transition temperature range during alignment: A randomized non-controlled comparative study.

Introduction: It has been suggested that heat-activated NiTi archwires (HANT) speed up crowding alleviation. HANT wires are available with different austenite finish temperatures.

Objective: The aim of the present study was to compare the effectiveness of two alignment sequences using thermally activated archwires with different austenite activation temperatures for the correction of mandibular anterior crowding.