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   2019| January-April  | Volume 8 | Issue 1  
    Online since May 7, 2019

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Evaluation of the interpretation of bitewing radiographs in treating interproximal caries
Hila Hajizadeh, Majid Akbari, Seyed Hosein Hoseini Zarch, Atefeh Nemati-Karimooy, Azadeh Izadjou
January-April 2019, 8(1):13-17
Objective: Misinterpretation of bitewing radiographs may lead to the selection of surgical approach rather than medical approach in treating proximal caries lesions. We aimed to determine the sensitivity, specificity, and diagnostic accuracy of bitewing radiography interpretation by various groups of dentists for the detection of proximal caries and subsequent treatment decision-making. Materials and Methods: This in vitro study was performed using 60 extracted molar and premolar teeth. The target proximal carious surfaces were categorized and coded according to the International Caries Detection and Assessment System (ICDAS) as category 1: ICDAS = 0, category 2: ICDAS = 1 or 2, and category 3: ICDAS = 3, 4, or 5. All the teeth were randomly divided and mounted onto 15 quadrants made of two premolars and two molars, and a digital bitewing image was taken from each quadrant. A checklist was given to four groups of participants (dentistry students, dentists with a DDS degree, restorative dentistry specialists, and oral radiology specialists) to indicate for which lesion depth they would intervene restoratively. The data acquired through the checklists were compared with direct visual examination of target surfaces before mounting. Results: Sensitivity and accuracy of bitewing radiography showed no significant difference among the groups. However, specificity was significantly higher in Group D. Conclusions: According to our results, interpretation of bitewing radiographs was different among the groups. Although not significant, the radiologists had the highest diagnostic accuracy than the other groups of participants, and the students showed the weakest performance in the diagnosis of restorative treatment needed. Furthermore, the highest percentage of decision error occurred when lesions had ICDAS 1 or 2, followed by ICDAS 3, 4, or 5, and finally 0 in all the four groups.
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Marginal adaptation of implant ceramic crowns produced with cerec® system
Silvio Mecca Jr, Elimario Venturin Ramos, Geraldo Alberto Pinheiro Carvalho, Simone Kreve, Aline Batista Gonçalves Franco, Sergio Candido Dias
January-April 2019, 8(1):18-22
Aim: This study aimed to assess the marginal adaptation of two different ceramic materials produced with CEREC system. Materials and Methods: A master die was digitized with an intraoral scanner (CEREC Omnicam) and produced 20 lithium silicate crowns – 10 VITA Suprinity® (VS) and 10 Celtra Duo® (CD). Marginal disadaptation was measured using the replica method and optical microscopy. Results: The Student's t-test showed a significant difference (P < 0.05) between VS (63.65 μm) and CD (97.05 μm). Results also showed statistical difference within the CD group (P < 0.005); on the other hand, there was no significant difference within the VS group. Conclusion: Based on the methodology used here, we are able to conclude that the VS group shows less marginal disadaptation and that, in addition to a larger marginal discrepancy, the CD crowns failed to maintain homogeneity since samples varied largely within the group.
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Inspecting evidence between cancer therapy-induced oral mucositis and periodontitis: A narrative review
Cristina De Paula Novaes, Aline Moreira, Maria Das Graças Afonso Miranda Chaves, Gisele Maria Campos Fabri
January-April 2019, 8(1):1-6
This narrative review aims to update the reader about the current issues surrounding central aspects implicated in the relationship between oral mucositis (OM) and periodontitis. We searched Medline/PubMed database. English language publications were included in the study. Paired reviewers selected articles for inclusion and extracted data. Forty-four studies met our inclusion criteria. The majority of the studies were review (63.8%) and clinical studies (36.2%). There is a lack of studies regarding the association of periodontal disease (PD) and OM. However, there are pathogenic similarities between them. Look for scientific evidence to confirm the relationship between PD and OM is imperative. Thus, if periodontitis can actually interfere with the occurrence and severity of OM, the establishment of strategies to reduce it may contribute to better control of OM, a serious adverse effect of cancer treatment.
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The visual perception and attractiveness of maxillary central incisor abrasion as evaluated via eyetracking
Cassio Trevisan, Matheus Melo Pithon, Thiago Martins Meira, Caio Seiti Miyoshi, Armando Yukio Saga, Orlando Motohiro Tanaka
January-April 2019, 8(1):7-12
Aims: The aim of this study was to evaluate the visual esthetic perceptions of dentistry students and laypeople with regard to abrasions of the maxillary incisor edges in a frontal smile analysis. Materials and Methods: Abrasions were analyzed through a series of edited frontal photographs, at increments of 0.25, 0.5, 0.75, 1.0, and 1.5 mm, in two subjects (one male and one female, respectively). Raters were dentistry students and laypeople. To obtain ocular tracing data, two software programs Ogama and The Eye Tribe Tracker® were used together, which allowed us to visualize ocular movement in certain areas of interest. Specifically, the images were visualized by 30 dentistry students and 30 laypeople. Heat maps and scan paths were generated by the software programs to assess the main regions of ocular fixation. Results: According to the analyzed images, the larger the area of abrasion, the greater the visualization at that point. Small differences were observed in both groups; however, the students showed a higher concentration of attention in the region of abrasions as compared with the laypeople. Conclusions: There were differences between the groups. Dentistry students maintained their focus for most of the time in the region or near the region of abrasions, while laypeople largely diverged their gaze to other areas and allocated significant visual attention when they observed larger abrasions.
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