JournalTOCs

Clinical and Laboratorial Research in Dentistry
Number of Followers: 1

This is an Open Access Journal

Open Access journal
ISSN (Online) 2357-8041
Published by Universidade de São Paulo

[46 journals]

Comparison of the accuracy of linear measurements in CBCT images with
different field of views
- Authors: Mojdeh Mehdizadeh, Ali Erfani, Parisa Soltani
  Abstract: This study sought to investigate the effect of the field of view (FOV) on linear measurements of cone beam computed tomography (CBCT) images. Methods: In this in vitro study, five dry human skulls were used. After using red wax to simulate soft tissue, the skulls were scanned using Galileos CBCT scanner (Sirona, Bensheim, Germany) with exposure parameters of 85 kVp and 21 mAs and voxel size of 0.280 mm; once with FOV of 15 cm × 8 cm and once again with 15 cm × 15 cm. The measured distances were the distance between the center of the bilateral mental foramen in the axial view (MM), the distance between the alveolar crest and the mandibular inferior border in the sagittal view on the midline (CB), and the depth of the socket of the left mandibular central incisor (L1). Descriptive statistics as well as Pearson’s correlation coefficient were used for statistical analysis (α = 0.05) using SPSS software (v. 25, IBM, NY, USA). Results: The measurements obtained with small and large FOV and with the dry skull were not significantly different (p > 0.05). The measurements obtained in small FOV had excellent correlation coefficient when compared with those obtained with the dry skull, with values of 0.890 for MM, 0.954 for CB, and 0.921 for L1 (p < 0.001). The measurements in large FOV also had excellent correlation coefficient when compared with those on the dry skull, with values of 0.894 for MM, 0.949 for CB, and 0.902 for L1 (p < 0.001). Conclusion: According to our findings, linear measurements obtained by CBCT scans in small and large FOVs were not significantly different than those on dry skulls. Since the linear measurements are accurate regardless of FOV size, selection of FOV must be based on patient factors, such as area of interest and radiation dose.
  PubDate: 2022-04-06
  DOI: 10.11606/issn.2357-8041.clrd.2022.194059
Antimicrobial photodynamic and photobiomodulation adjuvant therapies for
medication-related osteonecrosis of the jaw – Report of two cases with
long-term follow-up
- Authors: Angela B. P. Paiva, Beatriz C. Pereira, Mariana A. Brozoski, Julia G. L. Araújo, Maria Cristina Zindel Deboni
  Abstract: Medication-related osteonecrosis of the jaw (MRONJ) is a relatively rare condition with high morbidity. In this study, we report the management of two recalcitrant cases of MRONJ in the mandibles of two older women who received treatment with alendronate for osteoporosis. Sequestrectomies, combined with antimicrobial photodynamic therapy (aPDT) and photobiomodulation (PBMT), were performed in both patients. During perioperative and weekly postoperative aPDT sessions, a diode laser treated three anatomical points by emitting a continuous gallium-aluminum-arsenide wave at 660 nm (red laser), 0.028 cm2, 0.1 W, 3.57 W/cm2 for 90 s per point, 9 J per point, 321 J/cm2, and a total energy of 27 J. PBMT was applied weekly after surgery at 808 nm wavelength (other parameters being equal) for wound healing and pain relief. Both patients were followed-up for two years without any report of recurrence. Thus, aPDT and PBMT can be considered non-invasive adjuvant therapies for MRONJ without any adverse effects.
  PubDate: 2022-02-25
  DOI: 10.11606/issn.2357-8041.clrd.2022.194433
Treatment modalities of dentigerous cysts: literature review
- Authors: Paulo Rogério Corrêa Couto, Rafael Joshua de Lima Moura, Thayná de Melo Freitas, Rafael de Sousa Carvalho Saboia
  Abstract: There are some theories regarding the emergence of dentigerous cysts. Among them, one claims they originate from the separation of the follicle in the crown of an erupted tooth, and another, that fluid accumulates between the crown and the reduced epithelium. Even with the existing research, its etiopathogenesis still remains unknown. Cysts can be treated in several ways, among them: enucleation, marsupialization, decompression, cryotherapy, endoscopy, and their combinations. Objective: To review the literature on dentigerous cyst treatment. Material and methods: This is a narrative literature review of articles written in Portuguese and English, and published from 2011 to 2021, which are available at the SciELO, BVS, and PubMed databases. Conclusion: We found that cyst enucleation is considered the treatment of choice whenever feasible, but since this technique destroys a significant amount of tissue, other more conservative options can be used. However, the adequate technique will vary according to the characteristics of the lesion and the patient.
  PubDate: 2022-02-25
  DOI: 10.11606/issn.2357-8041.clrd.2022.193921
Antimicrobial activity in pit and fissure sealants: a systematic review
- Authors: Izabela Ferreira, Thaisa Theodoro de Oliveira, Andréa Cândido dos Reis
  Abstract: Objective: This study aimed to systematically review the literature about sealants modified with materials to promote antimicrobial activity and answer the question “What is the effect of incorporating materials that promote antimicrobial activity to pit and fissure sealants'” Materials and methods: Data were collected from questions about the material incorporated, its concentration, purpose of incorporation, analyses, and conclusions obtained. The Cochrane Library, LILLACS, ScienceDirect, and PubMed databases were searched with the terms “SEALANT”, “ANTIMICROBIAL”, and “ANTIBACTERIAL”. The selection of studies was performed in two stages. Inclusion criteria were applied via the evaluation of titles and abstracts, and exclusion criteria, via the complete reading of the studies. The adapted Joanna Briggs Institute (JBI) tool was used to analyze bias risk. Results: Due to the heterogeneity of the data found, it was impossible to perform a meta-analysis. We obtained 1389 references, including 11 of them in this review. Analysis of the studies found that modified sealants may show antimicrobial activity and alter their other properties. After applying the JBI tool, all studies showed low bias risk. Conclusion: Modified pit and fissure sealants show antimicrobial activity and altered physicochemical and mechanical properties.
  PubDate: 2022-02-21
  DOI: 10.11606/issn.2357-8041.clrd.2022.192671
Clinical aspects and treatment of amelogenesis imperfect: a case report
- Authors: Bruna Mandrá da Cunha, Paula Guitarrara Nirschl Morais Nery, Cristina Luzia Lopes Borges Silva, João Paulo Silva Servato, Maria Angélica Hueb de Menezes Oliveira, Denise Tornavoi de Castro
  Abstract: Objectives: This study discusses the clinical characteristics of a case of type IIA amelogenesis imperfecta (hypomatured with diffuse pigmentation), presenting the treatment methods and how this condition affects the patient’s quality of life. Materials and methods: A 7-year-old male patient with deciduous and permanent dentition sought dental care due to the following dental changes: brownish-yellow dental coloration, rough surface, presence of dental calculus on the lower incisors, end-to-end bite, and dentin hypersensitivity. Radiographic examination showed that the volume of dental tissues was normal, but there was a lack of contrast between enamel and dentin in all teeth – features compatible with the clinical diagnosis of AI-IIA. Treatment consisted of restorations performed with glass ionomer cement, application of fluoride varnish and daily mouthwash with 0.05% sodium fluoride. Results: The treatment performed was considered a success, since the patient’s complaints were addressed through an appropriate dental treatment, restoring the child’s function and aesthetics according to his needs. Conclusions: Early diagnosis of AI is of paramount importance for more conservative treatment focusing on preventing its effects. From the dental care point of view, AI treatment seeks to restore the patient’s oral health and consequently reintegrate them into social life with a higher quality of life.
  PubDate: 2022-02-21
  DOI: 10.11606/issn.2357-8041.clrd.2022.192922