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  • Research Summaries in focus

     

    Summarized & Presented by:

     

    Mohammad Adnan Abu Khalifeh BDS

    Assistant Editor, Smile Dental Journal

    e-communication Committee Vice President, JDA

    Health Editor, UMEN MAGAZINE

    Co-Owner, Dental Lounge/Smile Studio,

     Amman – Jordan | harper2003@gmail.com

     

     

     

    Finite Element Analysis on Stress Distribution of Maxillary Implant-Retained Overdentures Depending on the Bar Attachment Design and Palatal Coverage

     

    İzgi AD, Eskimez Ş, Kale E

    J Adv Prosthodont. 2016 Apr;8(2):85-93. Epub 2016 Apr 21

     

     

    PURPOSE

    The purpose of this study was to determine the effect of anchorage systems and palatal coverage of denture base on load transfer in maxillary implant-retained overdenture.

     

    MATERIALS AND METHODS

    Maxillary implant-retained overdentures with 4 implants placed in the anterior region of edentulous maxilla were converted into a 3-D numerical model, and stress distribution patterns in implant supporting bone in the case of unilateral vertical loading on maxillary right first molar were compared with each other depending on various types of anchorage system and palatal coverage extent of denture base using three-dimensional finite element analysis.

     

    RESULTS

    In all experimental models, the highest stress was concentrated on the most distal implant and implant supporting bone on loaded side. The stress at the most distal implant-supporting bone was concentrated on the cortical bone. In all anchorage system without palatal coverage of denture base, higher stresses were concentrated on the most distal implant and implant supporting bone on loaded side.

     

    CONCLUSION

    It could be suggested that when making maxillary implant retained overdenture, using Hader bar instead of milled bar and full palatal coverage rather than partial palatal coverage are more beneficial in distributing the stress that is applied on implant supporting bone.

     

     

     

    Retrospective Study on the 7.5-Year Survival of Resin-Bonded Dental Prostheses in Single Missing Second Premolar Cases

     

    İzgi AD, Eskimez Ş, Kale E

    J Indian Prosthodont Soc. 2016 Jan-Mar;16(1):26-9

     

     

    PURPOSE

    The purpose of this study is to report retrospectively the clinical results of cast metal slot-retained resin-bonded fixed dental prostheses (RBFDPs) used in the restoration of single missing second premolar teeth, as this kind of prostheses provides acceptable clinical outcomes in a minimally invasive and esthetic treatment for the average patient requiring cheaper and faster treatment alternative for a single missing posterior tooth. However, the data present in the literature are scarce.

     

    MATERIALS AND METHODS

    Clinical follow-up was reported up to 7.5 years in nine different cast metal slot-retained RBFDPs patients of both genders between 21 and 49 years of age. Routine clinical controls were performed 6 and 12 months after treatment, followed by regular intervals every year afterward. The Kaplan-Meier survival estimation method was used to determine the overall and functional survival rates and times of the RBFDPs at the end of the observation period.

     

    RESULTS

    At the end of the follow-up, all of the RBFDPs were still functional with a mean follow-up of 6.7 years. The Kaplan-Meier estimation for the overall survival was calculated as 89% for up to 7.5 years with one failure due to debonding. The functional survival rate was 100% with the lowest and highest observation periods being 5.8 and 7.5 years, respectively.

     

    CONCLUSIONS

    Within the limitations of this retrospective clinical study, it seems that the design and cementation regimen used for the RBFDPs presented can guarantee clinical success in the restoration of single missing second premolar teeth.

     

     

     

    Satisfaction with Dental Appearance and Attitude Toward Improving Dental Esthetics Among Patients Attending A Dental Teaching Center

     

    Maghaireh GA, Alzraikat H, Taha NA

    J Contemp Dent Pract. 2016 Jan 1;17(1):16-21

     

     

    AIM

    The aim of this study was to evaluate the factors influencing the satisfaction of dental appearance and attitude toward treatments to improve dental esthetics among patients attending a dental teaching center.

     

    METHODS

    A questionnaire was used to collect data of four background variables among 450 patients attended a dental teaching center in the city of Irbid in Jordan. The questionnaire enclosed self-reported questions about the appearance of anterior teeth, received esthetic treatment and desired treatment for improving esthetics. Descriptive, multiple logistic regression and Chi-square tests were used for data analysis (p ≤ 0.05).

     

    RESULTS

    The 450 participants consisted of (66.2%) male and (33.8%) female. Of these, 69.3% were satisfied with their dental appearance and 58.0% with the color of their teeth. Esthetic restorations were the most received treatment (39.8%) and whitening of teeth was the most desired treatment (55.3%). The patients’ satisfaction with dental appearance was influenced by teeth color, crowding and receiving whitening (p < 0.05. r = 0.561, r(2) = 0.315). The most desired esthetic treatments influenced by the satisfaction with dental appearance were esthetic restorations and orthodontics (p < 0.05. r = 0.223, r(2) = 0.05). Significantly more female reported having esthetic restorations and orthodontics (p = 0.008, 0.000) and desired to have orthodontic, crowns or veneers and esthetic restorations (p = 0.000, 0.015, 0.028).

     

    CONCLUSION

    Satisfaction with dental appearance was affected by teeth color, feeling teeth are crowded, desire for esthetic restorations and orthodontic treatment. A high percentage of patients were not satisfied with the color of their teeth.

     

    CLINICAL SIGNIFICANCE

    Recognizing the factors that affect patients’ satisfaction with their present dental appearance and attitude toward treatments to improve dental esthetic can guide clinicians to strategies to improve esthetics.