July/August 2020

Table of Contents


  • Editorial Some thoughts on COVID-19

    Roger D. Winland

    2020 July/August; 68(4):6.

    Full Article (PDF)
  • Pharmacology Sedation and neurotoxicity in the developing brain

    Sarah Albani
    Paul A. Moore 
    Elliot V. Hersh
    Mana Saraghi

    2020 July/August; 68(4):8-11.

    Full Article (PDF)
  • Endodontics Effective isolation of teeth: rationale, benefits, and tips

    Nathan Dinsbach

    2020 July/August; 68(4):12-16.

    Full Article (PDF)
  • Pain Management Oral mucosal burning and pain: the diagnostic challenge

    Molly S. Rosebush
    Christopher J. Spencer

    2020 July/August; 68(4):18-22.

    Full Article (PDF)
  • Oral Diagnosis Sharply defined radiolucency and Progressive mandibular retrusion

    Galal Omami

    2020 July/August; 68(4):78, 80.

    Full Article (PDF)
  • Self-Instruction Answers Exercises No. 441, 442, and 443 from the July/August 2019 issue

    2020 July/August; 68(4):79.

    Full Article (PDF)

Clinical Articles


    Orthodontics What every dentist needs to know about clear aligners

    Ariana Feizi
    John K. Brooks
    Monica P. Schneider 
    J. Rockwell Wright
    Nasir Bashirelahi

    This review highlights the clinical scope and limitations of clear aligner therapy. 

    2020 July/August; 68(4):23-26.

    Full Article (PDF)
    Self-Instruction Exercise No. GD459
  • Laser Therapy/Electrosurgery Diode laser–assisted management of intraoral soft tissue overgrowth: a case series

    Monika Pal
    Asmita Saokar
    Pratibha Gopalkrishna
    Rajeshwari H. R.
    Santhosh Kumar

    A case series describes the use of a 980-nm diode laser to treat soft tissue enlargement of the oral cavity. The results suggest that a 980-nm diode laser may be advantageous for treating benign proliferative lesions of the oral mucosa with negligible adverse sequelae.

    2020 July/August; 68(4):28-31.

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  • Basic Science Comparison of the effects of whitening and conventional toothpastes on the wear rate of a composite resin

    Mehrdad Gholipor
    Faezeh Abolghasemzadeh

    An in vitro study compared 3 whitening toothpastes and a nonwhitening daily toothpaste to determine their effects on the abrasive wear of a composite resin. Two bleaching toothpaste brands caused significantly more abrasion of the composite specimens than the control toothpaste. 

    2020 July/August; 68(4):32-35.

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    Special Patient Care Denture-related oral mucosal lesions in Alzheimer disease: a case-control study

    Lauren F. Schuch
    Mariana I. Rocha
    Michelle D. P. Matias
    Marco T. G. Cintra
    Raquel C. Ferreira
    Maria C. F. Aguiar

    A case-control study evaluated the association between denture-related oral mucosal lesions and Alzheimer disease (AD). Logistic regression analysis showed a higher prevalence of AD among individuals aged ≥ 80 years, those who were illiterate, users of tobacco, and patients with a slower gait, but the results suggested that AD is not a risk factor for denture-related oral mucosal lesions.

    2020 July/August; 68(4):36-41.

    Full Article (PDF)
    Self-Instruction Exercise No. GD460

    Basic Science The influence of LED irradiance on the degree of conversion of resin luting agents under translucent zirconia

    Rafaella Grasel
    Sheila Butler
    Gildo C. Santos, Jr
    Maria Jacinta Santos

    This study aimed to evaluate the effect of different LED irradiance levels on the degree of conversion (DC) of dual-cured resin luting agents photocured through a high-translucency zirconia disc. The interpositioned zirconia did not reduce the DC of the tested luting agents compared to direct irradiation. The influence of the LED irradiance level on the DC was material dependent.

    2020 July/August; 68(4):44-48.

    Full Article (PDF)
    Self-Instruction Exercise No. GD461
  • Basic Science Retention of flowable composite resins in comparison to pit and fissure sealants: a systematic review and meta-analysis

    Saumya Taneja
    Abhinav Singh

    A meta-analysis of studies comparing the 12- and 24-month retention rates of flowable composite resins and conventional pit and fissure sealants found that flowable composite resins showed better outcomes at 12 months. There was no statistically significant difference in retention rates at 24 months. 

    2020 July/August; 68(4):50-55.

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  • Implants Bone fenestration repair with leukocyte-platelet–rich fibrin after placement of implants in the anterior maxilla: a case report

    Ana Paula Carvalho
    Danielle Carvalho Oliveira Coutinho
    Carlos Roberto Garcia Araújo
    André Antônio Pelegrine
    Luís Otávio Miranda Cota
    Paulo Antônio Martins-Júnior

    Leukocyte-platelet–rich fibrin was placed in combination with deproteinized bovine mineral allograft to repair bone fenestration at the site of 2 implants. Complete coverage of the fenestration was shown at the 6-month follow-up.

    2020 July/August; 68(4):56-60.

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  • Special Patient Care Pyogenic granuloma in the tongue of a patient with Down syndrome

    Elisângela de Souza Santos Dias
    Laura Cruz-Mamani
    Alessandro Antônio Costa Pereira
    Felipe Fornias Sperandio
    Kellen Cristina da Silva Gasque
    Marina Lara de Carli
    João Adolfo Costa Hanemann

    This article presents the first reported case of a pyogenic granuloma affecting the tongue of an adult with Down syndrome. After 2 recurrences following lesion excision, the patient was provided with a silicone mouthguard to prevent the precipitating localized trauma, and no further recurrences were observed after 18 months.

    2020 July/August; 68(4):61-63.

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  • Pediatric Dentistry Amelogenesis imperfecta: use of cyanoacrylate as a desensitizing agent and its impact on oral health–related quality of life

    Letícia Fernanda Moreira-Santos 
    Maisa Costa Tavares 
    Joana Ramos-Jorge
    Cristiane Meira Assunção
    Isabela Almeida Pordeus
    Saul Martins Paiva
    Marco Aurélio Benini Paschoal
    Patrícia Maria Zarzar
    Fernanda Morais Ferreira

    A 5-year-old girl with amelogenesis imperfecta received applications of cyanoacrylate on the immature permanent first molars as a desensitizing agent after sodium fluoride varnish applications were unsuccessful in relieving sensitivity. Cyanoacrylate applications resulted in reductions in the patient’s frequency of complaints of pain and difficulty in drinking and eating.

    2020 July/August; 68(4):64-67.

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  • Sleep Apnea & Appliance Therapy Vertical dimension in dental sleep medicine oral appliance therapy

    Jerry C. Hu
    John C. Comisi

    This pilot study evaluated the effect of including the vertical dimension, as assessed using pharyngometry, in the occlusal registration for oral appliance therapy. In 26 patients who completed the study, the mean apnea-hypopnea index (AHI) was 20.7 before therapy and 7.8 after therapy. Within the limitations of this study, the pharyngometer-established occlusal position was effective in lowering AHI without the need for appliance titration procedures. 

    2020 July/August; 68(4):69-76.

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  • Periodontics Effect of cervical margin relocation technique with composite resin on the marginal integrity of a ceramic onlay: a case report

    Muneera Abdulaziz Alhassan
    Salwa Omar Bajunaid

    Treatment of a large proximal carious lesion that extends below the cementoenamel junction is challenging. Large defects usually require replacement with indirect restorations (inlays, onlays, or crowns). However, when the gingival cavity margins are deep, procedures such as isolation of the operative field, proper cavity preparation, successful impression-making, and adhesive luting may be hindered unless soft gingival or hard bony tissues are removed to expose the cavity margin. The present case report describes the clinical application of a conservative cervical margin relocation technique for treating deep cavity margins. A patient presented with large distal carious lesions and necrotic pulps in both the maxillary and mandibular right first molars, which were diagnosed with symptomatic apical periodontitis. After root canal treatment of both teeth, the maxillary molar underwent a crown-lengthening surgical procedure and subsequent placement of a zirconia crown. In the mandibular molar, the cervical margin was relocated by placing a composite resin base at the proximal gingival cavity margins under meticulous isolation of the operative field. The tooth was restored with a composite core build-up and bonded ceramic onlay. The satisfactory outcome suggested a promising prognosis for the oral health of the patient.

    2020 July/August; 68(4):e1-e3.

    Full Article (PDF)