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Journal Cover Odovtos - International Journal of Dental Sciences
  [1 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 1659-1046 - ISSN (Online) 2215-3411
   Published by Universidad de Costa Rica Homepage  [36 journals]
  • Origen de las revistas científicas, el caso de Odovtos

    • Authors: Olga Marta Murillo Bolaños MSc
      Pages: 9 - 11
      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
  • Color Selection and Reproduction in Dentistry. Part 3: Visual and
           Instrumental Shade Matching

    • Authors: Max Schmeling DDS; MS, PhD
      Pages: 12 - 21
      Abstract: In this third and final article, we will study the two methods of observation used in dental practice: visual and instrumental. The main scales and instruments used in color selection will be described. The similarities and differences between color reproduction by direct technique (composite resins) or by indirect technique (ceramic systems) will also be observed. At the end of the article the reader will be able to recognize the indications, advantages and limitations of each method.

      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
  • Clinical and Histopathological Study of Dentigerous Cyst Associated to
           Maxilar Lateral Tooth: Case Report

    • Authors: Lida Velazque Rojas DDS; MSc, Carlos Alonso Claudio DDS, MSc, PhD, Gina Velazque Rojas MD
      Pages: 13 - 22
      Abstract: The dentigerous cyst is one of the most common Odontogenic cysts involving the jaws, usually associated with the crown of a third molar or unerupted canine being in most unilateral lesions. The impaction of the incisor lateral maxillary permanent associated with dentigerous cyst is a rare entity and even more if it involves continuous dental crowns. Generally, affect between the second and third decade of life, its appearance in the first decade is still rare, representing only 9.1% of cases between 6 and 7 years. The purpose of this article is to describe the presence of impacted teeth associated with a large dentigerous cyst in the right jaw of an eight-year-old child with clinical and histopathological approach. Thorough evaluation of clinical history based on clinical, radiographic, and histopathological findings helps specialists to correctly diagnose and identify the etiological factors that lead to appropriate treatment.

      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
  • Oral Carcinoma of Squamous Cells with Early Diagnosis: Case Report and
           Literature Review

    • Authors: Yadira V. Boza Oreamuno DDS; MSc
      Pages: 25 - 32
      Abstract: Oral squamous cell carcinoma (OSCC) is the most common malignant neoplasm of epithelial origin in the oral cavity, usually affecting men over 40 years of age. The most frequent localization sites are the tongue and the floor of the mouth. The etiology is multifactorial being tobacco and alcohol the most important risk factors. The clinical presentation is variable and although it is preceded by visible changes in the oral mucosa, the diagnosis is usually made late. An early diagnosis is critically important to improve survival and treatment outcomes. Oral cancer screening is effective in reducing the mortality and morbidity of oral cancer. The purpose of this study was to present a case of OSCC and to highlight the importance of an early diagnosis using oral cancer screening, and the review of the relevant literature as for this pathology.

      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
  • Characterization of Fluorotic Enamel After Microabrasion and Desensitizing
           Agent

    • Authors: V. Zavala-Alonso DDS; MSc, PhD, G. Roque-Márquez DDS, MSc, N. Patiño-Marín DDS, MSc, PhD, D. Silva-Herzog DDS, MSc, PhD
      Pages: 47 - 56
      Abstract: Introduction. Enamel microabrasion is a procedure used for removing a superficial layer of enamel that has some alteration of color and/or texture caused by dental fluorosis. The purpose of this study was to compare the microhardness and micromorphology of the fluorotic enamel surface after microabrasion with 6.6% hydrochloric acid and silica or 18% hydrochloric acid and evaluate the effect of desensitizing agent exposure on the treated enamel.  Materials and Methods.  Twenty anterior teeth with moderate fluorosis were divided into two groups: 1) Perla-Dent® group and 2) Opalustre® group. Each buccal surface of incisors was sectioned to obtain samples 3x3 mm. The samples were then mounted in acrylic blocks. The enamel surface of the blocks was polished, after the microabrasion materials and desensitizing agent were applied according to the manufacturer's instructions. All samples were analyzed by Vickers microhardness tester and scanning electron microscopy (SEM). Results. Both experimental groups presented a decrease in the microhardness values, with statistically significant differences (p<0.0001) when comparing the baseline and after treatments values. To compare the microhardness values after both microabrasion and desensitizing treatment in the study groups, it was observed that the Perla-Dent® group obtained lower values than the Opalescence® group with a statistically significant difference (p<0.0001). The representative images of study groups in SEM showed the enamel surface morphology after Perla-Dent® treatment more irregular and a very marked relief than that observed in enamel surface morphology after Opalustre® treatment. Conclusion. The surface of the enamel was more affected with Perla-Dent® treatment than with Opalustre® treatment and the placement of UltraEz® agent does not recover its baseline microhardness.

      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
  • Pre-Columbian Dental Modifications in Costa Rica: A Study of Three
           Archaeological Sites

    • Authors: Irene Valerio-Alfaro MSc, Daniel Chavarría-Bolaños MSc; PhD
      Pages: 79 - 85
      Abstract: The aim of the study was to evaluate the presence and characteristics of dental modifications in pre-Columbian populations from three archaeological sites in the Costa Rican territory (Nacascolo, Jícaro and La Cascabel) in order to describe them according to previous classification. Specimens were obtained from the collections of  the National Museum of Costa Rica. All specimens were macroscopically analyzed and the pieces were classified. Photographic records were taken to each piece and a full description was done. Sixty one pieces with dental modifications were found. The types of dental modifications found were classified as A1, C2/C6, A2, C2, C1, E1 and A3 in order of prevalence. In conclusion, dental modifications were found in most of specimens. Particularly, C2/C6 modification was not reported by previous classifications.

      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
  • Automatic Electronic Device Used for the Evaluation of Cyclic-Fatigue
           Resistance of Nickel-Titanium Instruments

    • Authors: Cesar Gaitán-Fonseca DDS; MSc, PhD, Edith Lara-Alvarado DDS, MSc, Héctor Flores-Reyes DDS, MSc, PhD, Amaury Pozos-Guillén DDS, MSc, PhD, Verónica Méndez-González DDS, MSc
      Pages: 111 - 118
      Abstract: The aim of this study was to evaluate the cyclic-fatigue fracture of different Nickel-Titanium motor-driven rotary instruments (ProTaper® Universal, ProFile®, and Mtwo® systems) in artificial canals by means of an Automatic Electronic Device (AED). The study was performed using Nickel-Titanium instruments 25/0.06 evaluated in canals with a 45-degree curvature and 2-mm radius. The analyses evaluated two parameters: fracture by cyclic fatigue, and time of fracture; in addition, the length of separated fragment was evaluated. Medians and range values were calculated for each group. Data were analyzed by the Kruskall–Wallis and Mann–Whitney U tests to determine statistical difference. The ProFile motor-driven rotator system exhibited highest resistance to fracture due to cyclic fatigue and highest fracture time compared with the ProTaper and Mtwo systems (p <0.05). The equipment proposed in this study (AED) demonstrated efficiency for recording information, automation, scheduled work times and durations, cycle number, time of fracture, pressure changes and, principally control of the human factor.

      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
  • Effect of Nonsurgical Periodontal Treatment on Levels of Pyridinoline
           (ICTP) in the Gingival Crevicular Fluid (GCF)

    • Authors: Jorge González Quesada DDS; MSc, Sonia Rivera Alvarez DDS
      Pages: 139 - 147
      Abstract: The destructive periodontal disease affects the tissues supporting the teeth, with the final result in the loss of it; so the research is directed towards identifying objective measures of risk such as biomarkers of destruction. Because studies of biomarkers present in the gingival crevicular fluid (FGC) have reported promising results, it is posible associated markers of tissue degradation with the progression of periodontal disease. The aim of this study is to determine the effect of nonsurgical periodontal treatment on the levels of pyridinoline in the FGC patients with chronic periodontitis. Materials and Methods: FGC samples (before and after treatment), both active and inactive sites determined by the method of tolerance, ICTP levels were measured using the ICTP EIA. Uni Q, the results were analyzed using Stata 7.0 program and the student-test for nonparametric samples Results: ICTP levels decreased significantly after performing non-surgical periodontal treatment (p = 0.0001). Conclusions: According to the results, the ICTP may be a good marker to monitor the effects of nonsurgical periodontal treatment. 
      PubDate: 2017-03-02
      Issue No: Vol. 19, No. 1 (2017)
       
 
 
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