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Odovtos - International Journal of Dental Sciences
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1659-1046 - ISSN (Online) 2215-3411
Published by Universidad de Costa Rica Homepage  [39 journals]
  • Information: the Key to a Safe Practice

    • Authors: Mauricio Montero-Aguilar
      Pages: 8 - 9
      Abstract: .
      PubDate: 2020-08-07
      DOI: 10.15517/ijds.2020.43407
      Issue No: Vol. 22, No. 3 (2020)
  • University Dental Care Clinics and Education in Times of COVID-19

    • Authors: Gerardo Durán Ojeda
      Pages: 10 - 12
      Abstract: .
      PubDate: 2020-05-07
      DOI: 10.15517/ijds.2020.41732
      Issue No: Vol. 22, No. 3 (2020)
  • Virtualization of Dental Curricula in Times of COVID-19

    • Authors: José Pablo Tisi Lanchares
      Pages: 13 - 15
      Abstract: .
      PubDate: 2020-05-08
      DOI: 10.15517/ijds.2020.41744
      Issue No: Vol. 22, No. 3 (2020)
  • Clinical Simulation After COVID-19 Pandemic

    • Authors: José Pablo Tisi Lanchares
      Pages: 16 - 18
      Abstract: .
      PubDate: 2020-06-05
      DOI: 10.15517/ijds.2020.42166
      Issue No: Vol. 22, No. 3 (2020)
  • Aspects to Consider for Clinical Simulation Instances During COVID-19

    • Authors: Gerardo Durán Ojeda
      Pages: 19 - 21
      Abstract: .
      PubDate: 2020-06-19
      DOI: 10.15517/ijds.2020.42381
      Issue No: Vol. 22, No. 3 (2020)
  • COVID-19: Perspectives on the Pandemic and its Incidence in Dentistry

    • Authors: Tatiana Ramírez-Mora, Cristina Retana-Lobo, Jessie Reyes-Carmona
      Pages: 22 - 42
      Abstract: In December 2019, a novel coronavirus disease (COVID-19) presenting with pneumonia emerged in Wuhan, China. The ongoing spread of COVID-19 worldwide is creating enormous uncertainty. In particular, the dental profession is facing a major challenge. Due to the characteristics of dental settings, the risk of cross-infection is elevated between patients and dental staff. The present review aimed to briefly discuss the overview of the disease, including the basic science, epidemiology, symptoms, routes of transmission and several topics that the authors believe are binding and relevant to the dental practice. The guidelines adopted by governments and international organizations also address all dental associations to protect the health of the community and to contain the spread of COVID-19 infection until a vaccine or an effective/validated treatment becomes available.
      PubDate: 2020-05-06
      DOI: 10.15517/ijds.2020.41718
      Issue No: Vol. 22, No. 3 (2020)
  • Treatment of Gingival Enlargement Induced by Dental Plaque Associated with
           Local Factors: Case Report

    • Authors: Jorge González Quesada
      Pages: 50 - 53
      Abstract: Dental plaque-induced gingival enlargements associated with local factors such as the use of orthodontic appliances are frequently observed in young patients, with inadequate dental biofilm control. Among the recommended therapeutics to treat this condition is the Nonsurgical phase and the surgical approach. A clinical case of a 16-year-old patient with a gingival enlargement and its respective treatment is presented.
      PubDate: 2020-05-04
      DOI: 10.15517/ijds.2020.41691
      Issue No: Vol. 22, No. 3 (2020)
  • Dental Rehabilitation of a Rare Hallermann-Streiff Syndrome with
           Olygodontia: A Case Report

    • Authors: Gül Keskin, Gün B. Tek
      Pages: 54 - 58
      Abstract: Hallermann-Streiff syndrome (HSS) is a rare oculomandibulofacial discephaly with hypotrichosis that occurs as a sporadic mutation. It is characterized by abnormal findings especially in head and face. Dental anomalies occur in 50-80% of the patients. In this case report, facial-oral findings and the existing dental anomalies of the syndrome in a 6-year-old male patient diagnosed with HSS were identified. Dental rehabilitation and a 12-month follow-up of the patient were reported. Each case presented with this rare syndrome may contribute to the literature to determine the prognosis of the disease and to take protective and preventive measures.
      PubDate: 2020-05-29
      DOI: 10.15517/ijds.2020.42072
      Issue No: Vol. 22, No. 3 (2020)
  • E-Learning in Dental Schools in the Times of COVID-19: A Review and
           Analysis of an Educational Resource in Times of the COVID-19 Pandemic

    • Authors: Daniel Chavarría-Bolaños, Adrián Gómez-Fernández, Carmen Dittel-Jiménez, Mauricio Montero-Aguilar
      Pages: 69 - 86
      Abstract: While countries are facing different stages in their COVID-19 infection rates, worldwide there are millions of students affected by universities’ facilities closures due to the pandemic. Some institutions have enforced strategies to transfer some courses to a virtual modality, but many Dental Schools have been challenged to deal with a situation which requires emergency measures to continue the academic course in the middle of lock-downs and social distancing measures. Despite the fact that the number of online academic programs available, especially graduate programs, has increased in diverse modalities, this pandemic forced e-learning processes to develop abruptly. The likelihood of using e-learning strategies in dentistry was substantiated in the scientific literature and an overview of these opportunities is presented. Additionally, the experience of the University of Costa Rica Faculty of Dentistry is presented, as it was evident that some of the key elements in a e-learning environment needed a quick enhancement and initiation of some processes was required. First, it was necessary to categorize the academic courses depending on their virtualization's possibility (curricula analysis and classification), to better understand the extent of the impact and the work needed to contain, as far as the possibilities allowed, negative consequences on students learning process. Second, teachers needed further training in the application of virtual strategies which they hadn’t used before. do Third, an evaluation of the students’ conditions and needs was conducted in a form of a survey. Finally, teachers and students activated the available virtual platforms. For many Dental Schools, this virtualization process is an ongoing progress although it was abruptly imposed, but this moment indeed represents an enormous opportunity to move forward and get immerse in the virtualization environment as a teaching/learning experience.
      PubDate: 2020-05-14
      DOI: 10.15517/ijds.2020.41813
      Issue No: Vol. 22, No. 3 (2020)
  • Gene Expression of ECA2 Receptors in the Oral Cavity and Salivary Glands
           and Its Role in SARS CoV2 Infection. Literature Review

    • Authors: Francisco Germán Villanueva-Sánchez, Karla Mayela Avelar-Juárez, Nancy Pérez-Cornejo, Eduardo Alonso Cruz-Monroy, José David Ramos-Baena
      Pages: 87 - 92
      Abstract: ECA2 receptors have an important gene expression in the squamous cells of the tongue and salivary glands, a mechanism that is convenient for the inoculation of SARS CoV2 since it seeks to make the assembly complex through its glycoprotein or spike protein towards the ECA2 receptor of the oral mucosa. Once inoculated and favored by proteases, it is the key that allows the entry of the virion into the host cell for its subsequent replication, increase of viral load and potential deamination and infection; dental professionals must be alert to the mechanisms of infection in the oral cavity for their own protection and that of the patients who are treated by this health personnel.
      PubDate: 2020-06-05
      DOI: 10.15517/ijds.2020.42167
      Issue No: Vol. 22, No. 3 (2020)
  • Oral and Maxillofacial Radiology During the Coronavirus Disease 2019
           Pandemic: Recommendations for a Safer Practice

    • Authors: Deivi Cascante-Sequeira, Ana Cecilia Ruiz-Imbert, Francisco Haiter-Neto
      Pages: 93 - 102
      Abstract: The Coronavirus 2019 disease (COVID-19), was declared a pandemic by the World Health Organization on March 11, 2020, and registered the first case in Costa Rica on March 6, 2020, and 105 days later reported 2058 cases, with a wide age range (0-92 years). Its etiologic agent is the beta coronavirus SARS-CoV-2 with confirmed human-to-human transmission, mainly by the respiratory route. The presence of asymptomatic carriers of the virus and its transmission even without the manifestation of symptoms challenges health professionals worldwide. For this reason, assuming all patients who need dental care as possible carriers of the SARS-CoV-2 is mandatory and consequently, applying biosecurity measures with strict criteria. In the present literature review, we aim to recommend biosecurity measures to be applied during imaging examinations of dental patients due to the Coronavirus-2019 pandemic. We found that in the absence of treatment for COVID-19 disease and because of its high transmissibility, the most effective measures to prevent its spread are those allowing its containment. Therefore, the authors recommend: 1) acquiring imaging exams just in case of dental urgencies or emergencies, 2) prioritizing the use of extraoral exams, such as panoramic radiography or CBCT, under the principle of ALADAI and 3) the intraoral exams should be used just in case of a lack of extraoral imaging devices, or because of the need to solve diagnostic tasks in which they have a superior diagnostic value than those of the extraoral examinations.
      PubDate: 2020-06-26
      DOI: 10.15517/ijds.2020.42532
      Issue No: Vol. 22, No. 3 (2020)
  • Dentistry: its Role in the Transmission of SARS-CoV-2 Through Bioaerosols

    • Authors: Reinaldo Rodríguez Aguilar
      Pages: 103 - 112
      Abstract: Dental practice faces the paradigm shift and the modification of protocols in biosafety, an aspect that has become a variable to be practiced by each professional as part of their conduct at all times in order to survive as a profession in the face of the global pandemic that it represents the risk of transmission of the new coronavirus called COVID-19. One of the most important problems in dental biosecurity is represented by the generation of bioaerosols, since these are vectors that transport microorganisms to inside people’s bodies, which generates a potential occupational risk already known in the dental sciences but that it is enhanced with the transmissibility and pathogenicity of the new coronavirus. Until now, there are many questions about transmission through aerosols of SARS-CoV-2 , so the general objective of this review is to understand the scientific elements that govern the aerodynamics of bioaerosols applied to the dental environment and how these can become a potential virus disseminator when intraoral dental procedures are performed in infected patients. Understanding the aerodynamics of bioaerosols helps us understand how SARS-CoV-2 present in bioaerosol generated by dental procedures in infected patients can vary in terms of viability and infectivity by influencing other factors such as relative humidity, room temperature, air currents, bioaerosol physicochemical factors and the host´s immune system.
      PubDate: 2020-08-07
      DOI: 10.15517/ijds.2020.43411
      Issue No: Vol. 22, No. 3 (2020)
  • A Preliminary Research Study on the Cytotoxicity of Expired and
           Non-expired Composite Resins: In Vitro Study

    • Authors: Magrur Kazak, Nazmiye Donmez, Fatemeh Bahadori, Vildan Betul Yenigun, Abdurrahim Kocyigit
      Pages: 123 - 134
      Abstract: Objective: Studies have focused on use of non-expired composites. Unfortunately some clinicians still use expired composite resins without considering their effects. The objective of this in vitro preliminary research was to investigate cytotoxicity of expired(6-months) and non-expired composite resins. Materials and methods: Expired (E) and non-expired (NE) samples of one bulk-fill (Tetric N-Ceram Bulk-fill [TNB], Ivoclar Vivadent), two nano-hybrid (Tetric N-Ceram [TN], Ivoclar Vivadent; Clearfil Majesty ES-2 [CM], Kuraray) composite resins were tested on L929 fibroblast cells. Medium covering cells was removed then plastic rings (2-mm height) were filled with non-polymerized composite resins, placed in direct contact with cells and polymerized with LED light curing unit (LCU). Three samples were prepared for each group. After polymerization, removed medium was added to the cells. Cells that were left without medium (WOM) and cells that were exposed to LCU were used as positive control groups. Cells without any treatment were used as negative control group (C). Cells were incubated with tested materials for 7-days to evaluate cytotoxicity. Cell viability was calculated by sulforhodamine B test as a percentage (%). One-way ANOVA and post-hoc Tukey tests were used for statistical analyses (p<0.05). Results: Comparison between E and NE groups of same composite resins did not result in statistically significant differences (p>0.05), except between TN NE and TN E (p<0.05). TN E group was significantly more cytotoxic than TN NE group. When NE composite resin groups were compared to each other, statistically significant difference was only obtained between TNB NE and TN NE (p<0.05). Among all tested groups, TN NE group showed the least cytotoxic profile. No statistically significant differences were determined when E composite resin groups were compared to each other (p>0.05). All experimental groups compared with C group showed statistically significant cytotoxicity (p<0.05). A statistically significant difference existed between LCU and C groups (p<0.05). Conclusions: In clinical practice, expired composite resins should never be used. Although a correlation was found between expiration dates of nano-hybrid composite resins and cell viability, opposite data were obtained for bulk-fill composite resin. Researches are still required to evaluate biocompatibility of bulk-fill composite resins at various thicknesses with current LCUs.
      PubDate: 2020-01-24
      DOI: 10.15517/ijds.2020.40455
      Issue No: Vol. 22, No. 3 (2020)
  • Evaluation of Effectiveness of Self-Adhesive Composites for Amalgam Repair
           with or Without Alloy Primer, in Terms of Shear Bond Strength

    • Authors: Fatma Ayse Sanal, Derya Guler
      Pages: 135 - 144
      Abstract: Purpose: The purpose of the present research was to evaluate the effectiveness of self-adhesive composites in amalgam repair as time-saving alternatives to universal bonding-universal composite materials, with or without the usage of Alloy Primer in terms of shear bond strength. Materials and Methods: Forty-two disc-shaped amalgam samples were prepared by condensing into 6×2 mm holes in acrylic resin blocks, sandblasted with 50 μm Al2O3 and randomly divided into 6 groups according to repair material [Constic (Group C), Fusio Liquid Dentin (Group FLD), Universal bonding+Universal composite (Group Control), Alloy Primer+Constic (Group APC), Alloy Primer+Fusio Liquid Dentin (Group APFLD), Alloy Primer+Universal bonding+Universal composite (Group APControl)]. After shear bond strength test, the fracture modes were determined under a digital microscope. Statistical analysis was performed using one-way analysis of variance and Tukey's post hoc test. Results: The highest shear bond strength values were obtained for Fusio Liquid Dentin, among the three repair materials when Alloy Primer was not applied (p<0.05). Usage of Alloy Primer increased shear bond strength values of the investigated repair materials to amalgam, except Fusio Liquid Dentin. Conclusion: Within the limitations of the present research, it can be concluded that; the investigated self-adhesive composite materials could be time-saving alternatives to the Universal bonding+Universal composite for the purpose of amalgam repair, in terms of shear bond strength. The clinicians could prefer Fusio Liquid Dentin self-adhesive composite material without Alloy Primer application for the purpose of amalgam repair in non-cooperative patients.
      PubDate: 2020-02-06
      DOI: 10.15517/ijds.2020.40593
      Issue No: Vol. 22, No. 3 (2020)
  • Effect of Different Denture Base Cleansers on Surface Roughness of Heat
           Polymerised Acrylic Materials with Different Curing Process

    • Authors: Kubra Degirmenci, Mustafa Hayati Atala, Canan Sabak
      Pages: 145 - 153
      Abstract: Avoiding biofilm formation on dentures is associated with maintaining the surface properties of acrylic-based dentures. The aim of the study is to investigate the effects of two different cleaning agents (Corega and Klorhex 0.2% chlorhexidine gluconate) on surface roughness of the denture regarding efficacy of curing procedures. A total of sixty disc-shaped specimens were prepared with two different methods as long and short curing processes. The specimens were divided into subgroups according to the immersion solutions (distilled water, Corega tablet group and Klorhex 0.2% chlorhexidine gluconate group) (n=10). The samples were kept in a solution for 8 hours per day during a month. The average Ra1 (before exposure to the cleanser agent) and Ra2 (after exposure to the cleanser agent) of each sample was measured. A two-way ANOVA and post hoc Tukey test was used for statistical analysis. The solutions significantly increased the Ra values in both acrylic groups (p<0.001). While the effect of the distilled water group was significantly lower than Corega and Klorhex in the long-term curing group (p<0.05), no significant difference was found in the short-term curing group (p>0.05). The long-term curing time is highly effective in decreasing the surface roughness of the acrylic base material.
      PubDate: 2020-05-19
      DOI: 10.15517/ijds.2020.41900
      Issue No: Vol. 22, No. 3 (2020)
  • Influence of Powder-to-Gel Ratio on Physicochemical Properties of a
           Calcium Silicate Sealer

    • Authors: Fernanda F. E. Torres, Patricia Perinoto, Roberta Bosso-Martelo, Gisselle M. Chávez-Andrade, Juliane M. Guerreiro-Tanomaru, Mario Tanomaru-Filho
      Pages: 154 - 162
      Abstract: Differences in liquid-to-powder ratio can affect the properties of calcium silicate-based materials. This study assessed the influence of powder-to-gel ratio on physicochemical properties of NeoMTA Plus. Setting time (minutes), flow (mm and mm²), pH (at different periods), radiopacity (mm Al) and solubility (% mass loss) were evaluated using the consistencies for root repair material (NMTAP-RP; 3 scoops of powder to 2 drops of gel) and root canal sealer (NMTAP-SE; 3 scoops of powder to 3 drops of gel), in comparison to Biodentine cement (BIO) and TotalFill BC sealer (TFBC). Statistical analysis was performed using one-way ANOVA and Tukey tests (α=0.05). BIO had the shortest setting time, followed by NMTAP-RP and NMTAP-SE. TFBC showed the highest setting time and radiopacity. BIO, NMTAP-RP, and NMTAP-SE had similar radiopacity. All materials promoted an alkaline pH. NMTAP-RP/SE presented lower solubility than BIO and TFBC. Regarding the flow, TFBC had the highest values, followed by NMTAP-SE, and NMTAP-RP. BIO had the lowest flow. In conclusion, NMTAP in both powder-to-gel ratios showed high pH and low solubility. The increase in the powder ratio decreased the setting time and flow. These findings are important regarding the proper consistency and work time to clinical application.
      PubDate: 2020-07-17
      DOI: 10.15517/ijds.2020.42998
      Issue No: Vol. 22, No. 3 (2020)
  • Management of Recurrence of Ameloblastoma and Odontogenic Keratocyst: A
           Cross-Sectional Study

    • Authors: Onur Yilmaz, Zeynep Sagnak Yilmaz, Emre Balaban, Celal Candirli
      Pages: 174 - 186
      Abstract: Objectives: Odontogenic keratocyst (OKC) and ameloblastoma are slowly growing and locally invasive tumors with high recurrence rate. The aim of this study was to investigate the clinicopathologic features of recurrent ameloblastoma and OKC cases, and evaluate outcomes of our treatments in terms of recurrence. Material and Methods: A total of 23 patients with confirmed recurrent ameloblastoma or OKC and treated in our clinic within eleven years period were reviewed retrospectively. Results: Eleven recurrent OKC cases and twelve recurrent ameloblastoma cases were included. Most recurrences occurred within five years after the initial treatment (69.6%). Enucleation had the highest recurrence rate among the first treatments (18/23). All recurrences were located in the mandible, with one exception (22/23). All recurrent OKCs were multilocular. Different histopathologic subtypes of ameloblastoma were seen in our study, follicular ameloblastoma was the most common (8/12). The mean diameter of the lesions was 4.3 cm (ranging from 2 cm to 7 cm). Statically significant relation was found between location and diameter of lesion and year of recurrence onset (p=0.004; p=0.026). We performed radical treatments in these cases (ten patients underwent marginal resections, and thirteen patients underwent segmental resection), and no recurrence was observed during the follow-up period. Conclusion: Previous inadequate surgical procedures were the most important cause of recurrence. Marginal or segmental resection with safety margins is the best method to treat recurrences of OKC or ameloblastoma cases.
      PubDate: 2020-04-27
      DOI: 10.15517/ijds.2020.41564
      Issue No: Vol. 22, No. 3 (2020)
  • Relationship Between the Initial Position of Palatally Displaced Canines
           and Treatment Duration

    • Authors: Elçin Esenlik, Esra Bolat, Yavuz Findik
      Pages: 187 - 200
      Abstract: This prospective study aimed to assess the positional features of palatally displaced maxillary canines (PDCs), their relationship with both cephalometric and dental cast measurements and treatment duration. Pretreatment panoramic and lateral cephalometric radiographs and dental casts of 46 patients (23 patients with uni/bilateral PDC and 23 patients with Class I malocclusion) were collected. The mesial inclination of the permanent canine to the midline (α angle), the distance from the cusp tip of the permanent canine to the occlusal line (d distance), and the mesial position of the crown of the displaced canine (sector) were measured on the panoramic radiographs. SNA°, SNB°, ANB°, SN-GoGn°, SN-PP°, and PP-MP° angles and sagittal inclinations of the PDCs’ (C-PP°) were measured on cephalometric radiographs. Arch length discrepancies and transversal arch measurements were also performed. The Student’s t-test, Mann-Whitney U test and Kruskal-Wallis test were used to compare variables that were not normally distributed while ANOVA was used for the normally distributed data.  The arch widths were similar between the groups while crowding was significantly greater in the PDC group. A negative correlation was found between the α angle and vertical plane angle (SN-GoGn°). Treatment duration was positively correlated with α angle and d distance but there was no relationship with the sagittal angulation of the PDC to the palatal plane (C-PP°) and the treatment duration. Treatment duration can be expected to be longer with every increase in the angle of the PDC to the midline and distance from the occlusal plane.
      PubDate: 2020-05-11
      DOI: 10.15517/ijds.2020.41769
      Issue No: Vol. 22, No. 3 (2020)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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