January/February 2022

Timothy F. Kosinski

2022 January/February;70(1):5.

Roger A. Solow

2022 January/February;70(1):6-9.

Galal Omami

2022 January/February;70(1):78,80.

2022 January/February;70(1):79.

Yaser Safi
Reza Amid
Maryam Alizad-Rahvar

In this retrospective cross-sectional study, cone beam computed tomography (CBCT) was used to assess bone quantity variations in the posterior mandible of edentulous patients. Differences in cortical bone thickness and ridge dimensions were significantly correlated with differences in the age or sex of the patient or the site of measurement. Anatomical variations in the mandibular posterior region of edentulous patients necessitate comprehensive CBCT assessment prior to implant placement in this area. 

2022 January/February;70(1):10-16.

Gregory W. Bennett
Sung K. Kim

This in vitro study evaluated the accuracy of fit of surgical guides printed with 4 low-cost desktop 3-dimensional printers: SparkMaker Original, Photon, MP Mini SLA, and Epax X1. SparkMaker Original, Photon, and Epax X1 were able to consistently produce surgical guides within the accepted tolerance values. The Epax X1 surgical guide group had a significantly higher mean percentage of fit within the tolerance level.

2022 January/February;70(1):18-21.

Érica Reginato Cardoso
Izabela Volpato Marques Tookuni 
Carlos Alberto Herrero de Morais
Nair Narumi Orita Pavan
Gabriela Cristina Santin
Marcelo Capitanio
Marcos Sergio Endo

This study compared the effectiveness of 2 files for root canal retreatment, Reciproc and Mtwo retreatment files, by analyzing the percentage of remaining filling material left in the root canal as well as in each individual third of the root canal. There were no significant differences between the systems, but both left significantly more residual material in the apical third of the root. 

2022 January/February;70(1):22-25.

Fábio Fernandes Borém Bruzinga
Bruna Rafaela Mendes Costa
Letícia Parreira de Almeida
Mariana Pires de Souza
Martinho Campolina Rebello Horta
Soraya de Mattos Camargo Grossmann

A cartilaginous choristoma is a nonneoplastic nodular growth of histologically normal cartilage in an abnormal site. This report describes a case of a cartilaginous choristoma on the lateral surface of the tongue in a 65-year-old woman. 

2022 January/February;70(1):26-29.

Isabela Caroline de Sousa Ervolino
Victor Augusto Alves Bento
Juliana Lujan Brunetto
Brenda Farias Cavalcanti Vaz de Melo Laborde
Isabela Samudio Arantes
Daisilene Baena Castillo

In an in vitro study of the 3- and 90-day shear bond strengths of 3 cements used for luting metal-ceramic crowns, the self-adhesive resin cement group showed the greatest bond strength, followed by the resin-modified glass ionomer cement group, while the bond strength of the zinc phosphate cement group was significantly lower. A subgroup of resin-modified glass ionomer cement that was treated with microsandblasting showed significantly increased bond strengths at 90 days.

2022 January/February;70(1):30-33.

Ganesh Jadhav
Priya Mittal

Four cases of separated endodontic instruments are presented with 1-year clinical and radiographic follow-up. Different retrieval techniques were used, including ultrasonic tips, the wire loop method, safe-sided H-files, the braiding technique, and bypassing of the file. The key to successful management of a separated instrument is understanding the factors that influence the case and selecting an appropriate technique. 

2022 January/February;70(1):35-39.

Sara Muhammad El-Sherif
Dalia Ibrahim Sherief
Dina Ahmed El-Refai

This study sought to compare a bioceramic sealer (TotalFill) and a calcium hydroxide (Ca[OH]₂) sealer (Sealapex) in terms of their pH, calcium ion release, and antibacterial effect against Enterococcus faecalis bacteria. The Ca(OH)₂-related properties of TotalFill bioceramic sealer were superior to those demonstrated by Sealapex Ca(OH)₂ sealer.

2022 January/February;70(1):40-44.

Juliana Rodrigues Paes Barreto
Leandro de Moura Martins
Fabíola Mendonça da Silva Chui
Danielson Guedes Pontes 
Emilio Carlos Sponchiado, Jr
Luciana Mendonça da Silva

This study evaluated the influence of 3 irrigation techniques—positive-pressure irrigation, passive ultrasonic irrigation, and continuous ultrasonic irrigation—on the push-out resistance of glass fiber posts. Continuous ultrasonic irrigation was the best activation technique; it achieved greater bond strengths of glass fiber posts to root dentin, irrespective of the irrigating solution.

2022 January/February;70(1):46-50.

Eliana Dantas Costa
Danieli Moura Brasil
Hugo Gaêta-Araujo
Varner Leroy Leggitt
Gina Delia Roque-Torres

When measurements of pharyngeal airway subregions on lateral cephalometric and cone beam computed tomographic (multiplanar reconstruction [MPR] and 3-dimensional reconstruction) images were compared in relation to skeletal class, there were significant differences in linear measurements of the oropharynx and hypopharynx. Based on the study findings, MPR images should be used for visualization of the pharyngeal airway subregions.

2022 January/February;70(1):51-55.

Nicole M. Wirth
Lori E. Henrichs
Daniel Savett
Wen Lien
Michael Crabtree
Kraig S. Vandewalle

This study evaluated the efficacy of various methods for decontamination of diamond-coated burs contaminated with enamel and dentinal debris and inoculated with various microorganisms. No significant bacterial growth was found in any of the test groups. The use of a cleaning stone in combination with manual or ultrasonic cleaning resulted in the least amount of remaining tooth debris. 

2022 January/February;70(1):56-60.

Géssica Vasconcelos Godinho
Everton José da Silva
Cristhiane Almeida Leite da Silva
Luiz Evaristo Ricci Volpato

This article describes the case of an epidermoid cyst mimicking a thyroglossal duct cyst in a pediatric patient. The diagnostic hypothesis of thyroglossal duct cyst was not supported during surgery, and the lesion was treated with simple enucleation. The histopathologic results indicated the cyst was an epidermoid cyst, highlighting the limitations of computed tomography for diagnosis of this type of mass. 

2022 January/February;70(1):61-64.

Fabio Cesar Lorenzoni
Diego Rodrigo Paulillo Bazan
Karina Rodelini Silva
Maria Tereza Morais de Lima
Verônica Pereira de Lima
Leandro de Moura Martins

This study evaluated the effect of cement thickness and luting cement type on the push-out bond strength of glass fiber posts. The results suggested that the type of cement used played an important role in bond strength, but cement thickness did not. Adhesive failure between the dentin and cement layer was the most frequently observed failure mode. 

2022 January/February;70(1):65-71.

Karolina Aparecida Castilho Fardim
Alessiana Helena Machado
Neuza Maria Souza Picorelli Assis 
Bruno Salles Sotto-Maior
Letícia Queiroz Mauad
Karina Lopes Devito

This study quantified metallic artifacts on CBCT images of dental implants placed in different regions of the mandible and with different field of view and voxel sizes. More artifacts were produced under conditions of a smaller field of view or voxel, and more artifacts were found in the incisor region than other regions. 

2022 January/February;70(1):72-77.