Browsing by Autor "C S Ruthmary Parra"

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    Efectos de los analgésicos antiinflamatorios no esteroideos en la oseointegración de los implantes dentales. Revisión de Alcance
    (2019) Paula C. Baralt Bracho; Silvio J. Saba Salami; C S Ruthmary Parra
    The purpose of this Scoping Review of the literature was to determine whether the postoperative or chronic administration of non-steroidal anti-inflammatory analgesics drugs (NSAIDs) decreases the osseointegration of dental implants. An electronic literature review was made using the Medline (PubMed) and Science Direct databases, selecting articles between January 2006 and January 2018. The keywords used were: nonsteroidal anti-inflammatory drugs (NSAIDs), osseointegration, dental im- plants. The inclusion criteria included research on the effects of NSAIDs on the osseointegration of dental implants in animals, in humans and retrospective studies. The search yielded 868 articles of which 11 were selected. The retrospective studies showed discrepancies since they showed an association between the preoperative ingestion of NSAIDs and the failure of osseointegration as well a tendency to increase the bone crest around an implant with the consumption of NSAIDs. The studies in animals showed that the activity of cyclooxygenase 2 (COX-2) plays an essential role in osseointegration, so the specific inhibitors of COX-2 could be avoided preoperatively and postoperatively. The administration of ibuprofen did not affect the healing of dental implants and could be administered as postoperative medication in doses of 600 mg, 4 times a day for a week. It was also shown that the administration of aspirin produced no adverse effects and could increase the osseointe- gration rate. However, NSAIDs administered chronically could cause a negative effect on osseointegration.
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    Estabilidad del color de resinas compuestas diseñadas para el sector anterior luego de realizar maniobras de pulido y envejecimiento uv
    (2020) C S Ruthmary Parra; Robert Ramírez
    Composites resins are most frequently used materials in Restorative Dentistry especially when the aesthetic effect becomes important. An experimental design study was carried out, with a longitudinal cut and a comparative type with the aim of establishing differences in color stability of different types of composite resins: nano-filler, micro-hybrid and nano-hybrid, polished with two finishing and polishing systems: (rubber vs. discs), at three different times: pre-olishing, post-polishing and ultraviolet (UV) aging. Eight specimens were made of three composite resins Filtek Z350® (Z350), TetricNceram® (TNC) and BrilliantEnamel® (BE). Randomly subdivided into two groups to be submitted to the following systems of polished (SP): Jiffy ® (J) and Super Snap® (SS). Color was determined using the CIEL*a*b* scale at three stages, Pre-polishing1, Post-polishing2, and Uv Aging3. For statistical analysis was used a repeated measures ANOVA, for multiple comparisons of Tukey HSD test for inter-subjects effects and Bonferroni for significance, p=0.05 value. The results showed HSD Tukey: 70,2 ?E M1:Z350 (0.9) > TNC ?E 66.6 (0.8) = BE ?E 65.7 (0.9). M2:Z350 ?E 70.8 (1.1) > = TNC ?E 66.6 (1) and BE ?E 66.4 (0.4). M3: 68.6 ?E Z350 (0.7) = TNC ?E 68.3 (2,4) G BE ?E 64 (1,2). SP: p= 0.05 no significant statistical differences. Bonferroni: M2 ?E 67.9 (2.2) > ?E 67.5 (2.2) M1 = M3 ?E 67 (2.7). It was concluded that under the conditions in which this research was carried out the color stability of the resins tested is independent of the finishing and polishing system. Accelerated ultraviolet (UV) aging produces changes in the color and surface of the samples making them rougher and more chromatic. However, the presence of pre-polymers in TNC appears to improve stability.