January/February 2019

Table of Contents

Departments

  • Legacy Editorial

    Roger D. Winland
    2019 January/February; 67(1):5.

    Full Article (PDF)

  • Horizontal versus vertical restorative margin design Restorative Dentistry

    Roger A. Solow

    2019 January/February; 67(1):6-9.

    Full Article (PDF)

  • Calcified submandibular mass and Interradicular radiolucency Oral Diagnosis

    Galal Omami

    2019 January/February; 67(1):78, 80.

    Full Article (PDF)

Clinical Articles

  • SELF-INSTRUCTION

    Basic Science What every dentist should know about antibiotic-resistant bacteria

    Daniel J. Zemel
    Patricia A. Tordik
    John K. Brooks
    Nasir Bashirelahi

    Antibiotic-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.

    Full Article (PDF)
    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

    Emerson Filipe de Carvalho Nogueira
    Renata de Albuquerque Cavalcanti Almeida
    Ivson Souza Catunda 
    Belmiro Cavalcanti do Egito Vasconcelos
    Airton Vieira Leite Segundo

    The 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.

    Full Article (PDF)
    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

    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 Oliveira

    Plants 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.

    Full Article (PDF)
    Self-Instruction Exercise No. 434

  • Basic Science Evaluation of bond strength durability on bleached human dentin

    Nádia Mazzei Mendes Feitoza
    Ricardo Danil Guiraldo
    Alcides Gonini Júnior
    Murilo Baena Lopes
    Sandrine Bittencourt Berger

    This 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.

    Full Article (PDF)

  • Oral Medicine, Oral Diagnosis, Oral Pathology Fatal case of oral metastatic hepatocellular carcinoma in a patient unaware of his disease

    Marcos Custódio
    Camilla Vieira Esteves
    Norberto Nobuo Sugaya
    Suzana COM de Sousa
    Celso Augusto Lemos 

    This 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.

    Full Article (PDF)

  • Occlusion Evaluation of the articular eminence and the occlusal surface of the molars by cone beam computed tomography

    Eliana Dantas da Costa
    Laura Ramírez-Sotelo
    Gina Delia Roque-Torres
    Flávia Cristina Rodrigues Pinto
    Solange Maria de Almeida

    This 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.

    Full Article (PDF)

  • Oral Medicine, Oral Diagnosis, Oral Pathology Denosumab-related osteonecrosis of the jaw: a report of 2 cases and review of the literature

    Hardeep Chehal
    Nikolaos G. Nikitakis
    Mohammed N. Islam
    Jason H. Goodchild
    Lorenzo Mordini
    Indraneel Bhattacharyya 

    Antiresorptive 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

    Rafael Massunari Maenosono
    Leticia Ferreira de Freitas Brianezzi
    Sérgio Kiyoshi Ishikiriama
    Adilson Yoshio Furuse

    Zirconia-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.

    Full Article (PDF)

  • Orthodontics Evaluation of slot height in Roth prescription orthodontic brackets

    Carolina Mattar
    Lucas Hian da Silva
    Tarcila Triviño
    Ana Carla Raphaelli Nahás-Scocatem
    Fernando César Torres
    Paulo Eduardo Guedes Carvalho

    The 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

    Mari M. Sugii
    Ricardo A. Caldas
    Thayla H. N. Gouvea
    Débora Alves Nunes Leite Lima
    Giselle M. Marchi
    Flávio Henrique Baggio Aguiar

    A 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.

    Full Article (PDF)

  • Special Patient Care Oral tranexamic acid associated with platelet transfusion to prevent hemorrhage in a patient with Glanzmann thrombasthenia

    Luan Cartaxo Félix
    Madiana Magalhães Moreira
    Francisco Artur Forte Oliveira
    Clarissa Pessoa Fernandes
    Mario Rogério Lima Mota
    Ana Paula Negreiros Nunes Alves
    Fabrício Bitu Sousa      

    For 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.

    Full Article (PDF)

  • Esthetics/Cosmetic Dentistry Esthetic perception of smiles with different gingival conditions

    Sabrina Maciel Cavalcanti
    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 Carvalho 
    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 Quitero
    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.

    Full Article (PDF)
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