September/October 2019

Fereshteh Shafiei
Zahra Fattah
Solmaz Barati

This study evaluated the influence of operator skill on the shear bond strength of a self-adhesive resin cement to dentin after different adhesive treatments. Flat dentin surfaces were prepared on 160 extracted molars. The teeth were distributed evenly (n = 80) to 2 groups based on the operator’s skill (undergraduate dental student vs operative dentistry specialist). The teeth in each operator group were distributed into 5 groups based on pretreatments used before they were cemented to indirect composite resin cylinders with Panavia SA Luting Plus resin cement. The operators prepared the dentin surfaces for bonding according to the following pretreatment groups: 1, no treatment; 2, phosphoric acid etching; 3, Clearfil Universal Bond in etch-and-rinse mode; 4, Clearfil Universal Bond in self-etching mode; and 5, Clearfil SE Bond 2-step adhesive. After cementation was performed by the 2 operator groups, shear bond strength testing was performed, and data were analyzed with 2-way analysis of variance. The effects of operator skill and surface pretreatment and their cumulative effect were statistically significant (P < 0.05). The shear bond strength of the control group in the student group was significantly greater than that of the specialist group (P = 0.02). In group 5 (2-step adhesive), the shear bond strength of the specialist group was significantly greater than that of the student group (P < 0.001). The use of acid etching and the 3 adhesive treatments improved the bonding ability of resin cement for the expert group. This positive effect was observed only in the etch-and-rinse and self-etching modes for the student group. Extensive clinical experience did not have a positive effect on the bonding effectiveness of resin cement with no pretreatment, while the expert group showed better results in applying this cement with a 2-step adhesive pretreatment.

2019 September/October; 67(5):e1-e6.

Joseane Delfino de Albuquerque Canto
Luciana Sarmento de Mendonça
José Alcides Almeida de Arruda
Pamella Recco Alvares
Amália Moreno
Maria Luiza dos Anjos Pontual
Marcia Maria Fonseca da Silveira

The objective of this study was to evaluate the influence of the radiopacity of 3 composite resin materials on the interpretation of radiographic images and to correlate the diagnosis with clinical management. The radiopacity of the 3 materials was statistically similar (P = 0.413). However, the radiopacity of the materials influenced diagnosis and decision-making. A restorative material may be within the established requirements regarding radiopacity, but on radiographic evaluation it might not be differentiated from mineralized dental tissues.

2019 September/October; 67(5):72-76.

Joel Oliveira Barreto
Ivo de Souza Albuquerque
Flávia Jucá Alencar Silva
Lívia Maria Sales Pinto-Fiamengui
Rômulo Rocha Regis

A 36-year-old man with an esthetically compromised maxillary anterior region was treated by means of periodontal microsurgery, an implant-supported dental prosthesis, and tooth-supported crowns. Five years after cementation of the restorations, the results remained stable. Careful treatment planning allowed the achievement of a satisfactory, predictable, and long-lasting esthetic result.

2019 September/October; 67(5):68-71.

Thomas Y.H. Yoon
Alexander G. Ahmadi
Nathaniel A. Saed
Nathan E. Estrin
Donald E. Millner
Thanhphuong N. Dinh

Cone beam computed tomograms (CBCT) were studied to determine the prevalence and locations of accessory mental foramina (AMFs) and analyze whether the morphologic characteristics of the AMFs were associated with patient sex, patient race/ethnicity, or the side of the mandible. Two hundred CBCT scans were examined, and AMFs were identified in 11.5% of patients and 6.5% of all hemimandibles. Analysis revealed that 30.0% of AMFs were located anterosuperiorly and 23.3% posterosuperiorly to the mental foramen. Statistical analyses showed no association between the occurrence of AMFs and the sex of the patient, race/ethnicity of the patient, or side of the mandible, highlighting the importance of using CBCT before any mandibular surgery.

2019 September/October; 67(5):62-67.

Mea A. Weinberg
Stuart L. Segelnick
Dena M. Sapanaro

Many experienced clinicians and healthcare students take shortcuts or lack knowledge regarding the appropriate technique for measuring blood pressure. This article examines guidelines for proper blood pressure measurement to ensure accurate results.

2019 September/October; 67(5):58-61.

Jardel Francisco Mazzi-Chaves
Cecília Valente Martins
Aline Evangelista Souza-Gabriel
Manoel Brito-Júnior
Antônio Miranda da Cruz-Filho
Liviu Steier
Manoel Damião de Sousa-Neto

In an in vitro study to evaluate the effect of a final canal rinse with 0.2% chitosan on the bond strength of resin sealer in root canals, 30 canine root canals were prepared and distributed into 3 groups according to the final rinsing solution: 0.2% chitosan, 17% ethylenediaminetetraacetic acid (EDTA), or 1% sodium hypochlorite (NaOCl). A final rinse with chitosan or EDTA resulted in significantly greater push-out bond strength of root fillings to root canal than did NaOCl. Adhesive failure was the most frequent type in all groups.

2019 September/October; 67(5):54-57.

James F. Jenkins
Henry A. St. Germain, Jr

When a developing mandibular premolar was unintentionally removed during extraction of an ankylosed primary molar, the premolar was handled carefully and reimplanted within 20 seconds. Close monitoring of the tooth over the next 10 years revealed that the premolar erupted normally, the tooth was asymptomatic, root formation was complete, and the results of pulp testing were within normal limits.

2019 September/October; 67(5):50-53.

Eliana Dantas Costa
Priscila Dias Peyneau
Maria Augusta Visconti
Karina Lopes Devito
Gláucia Maria Bovi Ambrosano
Francielle Silvestre Verner

Cone beam computed tomographic images taken prior to implant surgery showed bilateral bifurcation of the mandibular canal, from the mandibular foramen to the gonial angle, in a 45-year-old patient. In addition, there were 3 distinct mental foramina. Clinicians must be aware of anatomical variations in the mandibular region to avoid complications such as difficulty in obtaining anesthesia or postoperative sensory dysfunction.

2019 September/October; 67(5):46-49.

Renata Vasconcelos Monteiro 
Carolina Mayumi Cavalcanti Taguchi
Iane Souza Nery Silva 
Ludmilla de Azevedo Linhares 
Jussara Karina Bernardon

This article describes the successful use of the internal-external home bleaching technique in 2 patients, each of whom had a single darkened nonvital tooth. This technique is simple, low cost, and conservative and provides excellent esthetic results.

2019 September/October; 67(5):40-44.

Márcio Grama Hoeppner
Fabio Martins Salomão
Marcia Cristina Hirose
João Felipe Besegato
Daniel Sundfeld Neto
Renato Herman Sundfeld

This case report describes treatment of tooth wear caused by daily intake of acidic beverages. After the teeth were temporarily restored with glass ionomer cement, the patient underwent basic periodontal therapy and received guidance regarding daily oral hygiene and dietary habits. After adequate clinical oral conditions were reestablished, composite resin restorations were placed on the maxillary anterior teeth that displayed dental erosion, improving form, esthetics, and function.

2019 September/October; 67(5):36-39.

McKinley D. Soult
Wen Lien
Daniel Savett
Francisco F. Gallardo
Kraig S. Vandewalle

A new high-speed sintering furnace reportedly sinters zirconia in minutes rather than the hours typically required for traditional fabrication of zirconia materials. The flexural strength/modulus, translucency/opalescence, and grain size of a full-contour zirconia material were evaluated after sintering in a high-speed or conventional zirconia furnace. The zirconia sintered in the high-speed furnace showed a significant decrease in grain size and no significant difference in strength or optical properties compared to specimens sintered in the conventional zirconia furnace.

2019 September/October; 67(5):30-34.

Marilia Mattar de Amoêdo Campos Velo
Cassiana Koch Scotti 
Isabela Toledo Teixeira da Silveira 
Rafael Francisco
Lia Mondelli
Maria Teresa Atta
Juliana Fraga Soares Bombonatti

Caries is a continuum of disease stages during which tooth damage may be reversed or controlled, depending on lesion progression. The International Caries Detection and Assessment System (ICDAS) was used in conjunction with the Lesion Activity Assessment (LAA) to assess caries progression and guide treatment decisions for a teenaged patient with untreated lesions. Treatment of different tooth surfaces involved a minimally invasive dentistry approach that consisted of remineralization, placement of a composite resin restoration, microabrasion, and periodic maintenance. The 28-month follow-up revealed satisfactory results.

2019 September/October; 67(5):24-28.

2019 September/October; 67(5):80.

Tanya M. Gibson

2019 September/October; 67(5):77-78.

Nathan Dinsbach

2019 September/October; 67(5):20-22.

John J. Frazier
Christopher J. Spencer

2019 September/October; 67(5):17-19.

Mark I. Malterud

2019 September/October; 67(5):14-16.

Sahand Eslaamizaad
Elliot V. Hersh
Mana Saraghi

2019 September/October; 67(5):8-12.

Timothy F. Kosinski

2019 September/October; 67(5):6.