January/February 2019
Table of Contents
Departments
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Legacy Editorial
Full Article (PDF)Roger D. Winland
2019 January/February; 67(1):5.
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Horizontal versus vertical restorative margin design Restorative Dentistry
Full Article (PDF)Roger A. Solow
2019 January/February; 67(1):6-9.
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Calcified submandibular mass and Interradicular radiolucency Oral Diagnosis
Full Article (PDF)Galal Omami
2019 January/February; 67(1):78, 80.
Clinical Articles
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SELF-INSTRUCTION
Basic Science What every dentist should know about antibiotic-resistant bacteria
Full Article (PDF)Daniel J. Zemel
Patricia A. Tordik
John K. Brooks
Nasir BashirelahiAntibiotic-resistant bacteria complicate patient treatment and yield poorer outcomes. This article provides an overview of the challenges posed by resistant microbial strains and the research efforts to overcome this obstacle.
2019 January/February; 67(1):10-13.
Self-Instruction Exercise No. 432 -
SELF-INSTRUCTION
Oral and Maxillofacial Surgery Impacted maxillary third molar displaced to the infratemporal space: a critical review and case report
Full Article (PDF)Emerson Filipe de Carvalho Nogueira
Renata de Albuquerque Cavalcanti Almeida
Ivson Souza Catunda
Belmiro Cavalcanti do Egito Vasconcelos
Airton Vieira Leite SegundoThe aim of this study was to use the evidence found in a critical literature review as a basis to discuss the displacement of maxillary third molars to the infratemporal fossa in terms of anatomical and demographic characteristics and the treatment protocols used. In addition, a new clinical case is reported.
2019 January/February; 67(1):16-20.
Self-Instruction Exercise No. 433 -
SELF-INSTRUCTION
Basic Science Antimicrobial activity of noncytotoxic concentrations of Salvia officinalis extract against bacterial and fungal species from the oral cavity
Full Article (PDF)Jonatas Rafael de Oliveira
Polyana das Graças Figueiredo Vilela
Rosilene Batista de Aguiar Almeida
Felipe Eduardo de Oliveira
Cláudio Antonio Talge Carvalho
Samira Esteves Afonso Camargo
Antonio Olavo Cardoso Jorge
Luciane Dias de OliveiraPlants can be used in the control of microorganisms responsible for human infections. This study evaluated the antimicrobial activity of Salvia officinalis (sage) on strains isolated from the oral cavity (Staphylococcus spp, Streptococcus mutans, and Candida spp) as well as its cytotoxic effect in murine macrophages and cytokine inhibition. An S officinalis concentration of 50.0 mg/mL was effective against all microorganisms, and no cytotoxic effect was observed.
2019 January/February; 67(1):22-26.
Self-Instruction Exercise No. 434 -
Basic Science Evaluation of bond strength durability on bleached human dentin
Full Article (PDF)Nádia Mazzei Mendes Feitoza
Ricardo Danil Guiraldo
Alcides Gonini Júnior
Murilo Baena Lopes
Sandrine Bittencourt BergerThis study evaluated the effect of aging on the microtensile bond strength (μTBS) of composite resin bonded to human dentin bleached with 35% hydrogen peroxide or 10% carbamide peroxide. Based on the results, the authors concluded that μTBS durability was not affected by the choice of bleaching treatment.
2019 January/February; 67(1):28-31.
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Oral Medicine, Oral Diagnosis, Oral Pathology Fatal case of oral metastatic hepatocellular carcinoma in a patient unaware of his disease
Full Article (PDF)Marcos Custódio
Camilla Vieira Esteves
Norberto Nobuo Sugaya
Suzana COM de Sousa
Celso Augusto LemosThis report describes a rare case of an oral metastatic hepatocellular carcinoma, located completely within the oral mucosa overlying the alveolar ridge, in a patient who was unware of his primary disease. This case reinforces the important potential for dentists to identify neoplastic diseases that are unknown to their patients.
2019 January/February; 67(1):32-35.
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Occlusion Evaluation of the articular eminence and the occlusal surface of the molars by cone beam computed tomography
Full Article (PDF)Eliana Dantas da Costa
Laura Ramírez-Sotelo
Gina Delia Roque-Torres
Flávia Cristina Rodrigues Pinto
Solange Maria de AlmeidaThis study utilized cone beam computed tomography to evaluate the posterior slope of the articular eminence and the lateral slope of the mandibular fossa in relation to the cusp-fossa angle of the first molars. There were correlations between the angles of the mandibular left first molar fossa and the lateral slope of the left mandibular fossa and between the height of the mandibular left first molar cusp and the angle of the lateral slope of the right mandibular fossa. Dentists should consider anatomical factors during treatment planning to prevent the development of occlusal interferences that can trigger temporomandibular disorders.
2019 January/February; 67(1):36-41.
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Oral Medicine, Oral Diagnosis, Oral Pathology Denosumab-related osteonecrosis of the jaw: a report of 2 cases and review of the literature
Full Article (PDF)Hardeep Chehal
Nikolaos G. Nikitakis
Mohammed N. Islam
Jason H. Goodchild
Lorenzo Mordini
Indraneel BhattacharyyaAntiresorptive and antiangiogenic drugs such as denosumab have been implicated in the induction of medication-related osteonecrosis of the jaw (MRONJ). This article reports 2 cases of MRONJ associated with denosumab use. The characteristics and progression of MRONJ in patients who take denosumab are reviewed, and therapeutic measures are discussed.
2019 January/February; 67(1):42-46.
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Fixed Prosthodontics Clinical perceptions of zirconia-reinforced lithium silicate ceramic: a case report and 6-month follow-up
Full Article (PDF)Rafael Massunari Maenosono
Leticia Ferreira de Freitas Brianezzi
Sérgio Kiyoshi Ishikiriama
Adilson Yoshio FuruseZirconia-reinforced lithium silicate (ZLS) ceramics reportedly demonstrate high flexural strength, satisfactory adhesion to resin cement, and good wear resistance. This case report discusses clinical perceptions regarding the handling and performance of ZLS ceramics when used for laminate veneers on the maxillary incisors.
2019 January/February; 67(1):47-50.
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Orthodontics Evaluation of slot height in Roth prescription orthodontic brackets
Full Article (PDF)Carolina Mattar
Lucas Hian da Silva
Tarcila Triviño
Ana Carla Raphaelli Nahás-Scocatem
Fernando César Torres
Paulo Eduardo Guedes CarvalhoThe aim of this study was to investigate the slot height dimension of Roth prescription brackets from several commercial brands. Almost all bracket slot heights were significantly smaller than stated by the manufacturers, with a great variability within the same brand and indication, demonstrating a lack of precision in the fabrication process.
2019 January/February; 67(1):51-54.
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Restorative Dentistry Utilizing the optical properties of composite resins to improve esthetics: a layering technique for anterior restorations
Full Article (PDF)Mari M. Sugii
Ricardo A. Caldas
Thayla H. N. Gouvea
Débora Alves Nunes Leite Lima
Giselle M. Marchi
Flávio Henrique Baggio AguiarA comprehensive knowledge of the optical properties of composite resins is essential to achieving optimal results in direct anterior restorations. This case report describes an anterior composite resin restoration fabricated with a layering technique and explains how to use a simple photographic method to verify that the desired optical effects are reproduced.
2019 January/February; 67(1):55-60.
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Special Patient Care Oral tranexamic acid associated with platelet transfusion to prevent hemorrhage in a patient with Glanzmann thrombasthenia
Full Article (PDF)Luan Cartaxo Félix
Madiana Magalhães Moreira
Francisco Artur Forte Oliveira
Clarissa Pessoa Fernandes
Mario Rogério Lima Mota
Ana Paula Negreiros Nunes Alves
Fabrício Bitu SousaFor patients with Glanzmann thrombasthenia (GT), conventional surgical dental treatments may result in hemorrhagic complications. Multidisciplinary integration and careful presurgical planning can reduce the risk of complications. For a 22-year-old woman with GT who required both gingival surgery and tooth extractions, dividing the procedures into 2 separate surgeries and combining the use of oral tranexamic acid and transfusion of 1 pack of platelet concentrate prior to each procedure was an effective preventive approach. No bleeding or thrombotic events were observed.
2019 January/February; 67(1):61-65.
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Esthetics/Cosmetic Dentistry Esthetic perception of smiles with different gingival conditions
Sabrina Maciel CavalcantiFull Article (PDF)
Selva Maria Gonçalves Guerra
Flavia Bridi Valentim
Elizabeth Pimentel Rosetti
Photographs of smiles were digitally modified to create different gingival asymmetries and recessions, and laypeople, general dentists, and periodontists were surveyed about the esthetics of the smiles. Changes in smile esthetics were perceived differently by laypeople compared to dental professionals. It is important for the dentist to know what a patient considers to be a beautiful smile when recommending dental treatment.
2019 January/February; 67(1):66-70.
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Basic Science Resin bond strength to zirconia: effects of surface treatments and resin cements
Rodrigo Furtado de CarvalhoFull Article (PDF)
Marília Pivetta Rippe
Renata Marques de Melo
Marco Antônio Bottino
Rodrigo Othávio Assunção Souza
This study evaluated the effect of surface treatments on the microshear bond strength between zirconia and different resin cements. Glazing and silica coating promoted the highest values of bond strength between zirconia and cement; the self-adhesive cement presented the highest values of bond strength, except when a primer surface treatment was used.
2019 January/February; 67(1):71-77.
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Basic Science Optical coherence tomography and polarized light microscopy for the evaluation of artificial caries: a preliminary study
Mayra Fidelis Zamboni QuiteroFull Article (PDF)
Luciana Kfouri Siriani
Cynthia Soares de Azevedo
Anderson Zanardi de Freitas
Tais Scaramucci
Maria Regina Lorenzetti Simionato
Adriana Bona Matos
This study was designed to investigate whether there is a correlation between the findings of optical coherence tomography (OCT) and polarized light microscopy (PLM) when these techniques are used to evaluate standard enamel white-spot lesions developed by distinct cariogenic challenges. Bovine enamel fragments (N = 168) were randomly allocated into 6 experimental groups according to the microbiologic model (Streptococcus mutans UA159, Streptococcus sobrinus ATCC 33478, or mixed S mutans and S sobrinus) and carbohydrate sources (1% sucrose or combined 1% sucrose and 1% starch). Specimens were examined by OCT and PLM every day within a period of 7 days. Five measurements of demineralization depth were recorded for each specimen, and means were calculated. Data were analyzed with analysis of variance and Tukey tests (α = 0.05), and a correlation test was performed. All cariogenic challenges created sub-superficial lesions. In both the OCT and PLM analyses, the demineralization depth reached its peak between days 6 and 7 of the cariogenic challenge, except for the group challenged with S sobrinus supplemented with combined sucrose and starch; for that group, demineralization peaked on day 5 in the OCT analysis. There was a significant correlation between OCT and PLM (P = 0.00; r = 0.842). This preliminary study suggests that OCT is a reliable, nondestructive method to measure the demineralization depth of enamel white-spot lesions, which can be useful for the laboratory and has potential for clinical studies. Using the 1% sucrose and S mutans model for 6 days is a simple and effective method to induce enamel caries–like lesions without compromising the depth and morphologic features of the obtained lesions.
2019 January/February; 67(1):e1-e6.
