Browsing by Author "El Talawy, Dina Bahgat"

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    CLINICAL AND RADIOGRAPHIC OUTCOMES OF POLY- ETHERETHERKETONE (PEEK) HYBRID PROSTHESIS USED FOR “ALL ON FOUR” REHABILITATION OF EDENTULOUS MAXILLA. A SHORT-TERM CASE SERIES STUDY
    (EDJ, 2019-10) Ali, Samer Mostafa; El Talawy, Dina Bahgat
    Purpose: The aim of this study was to evaluate clinical and radiographic outcomes of polyetheretherketone (PEEK) hybrid prosthesis used for “All on four” rehabilitation of edentulous maxilla. Materials and methods: Six patients with atrophied edentulous maxillary ridges were managed by 4 implants according to the “All on four” protocol using computer guided surgery and flapless surgical approach. The existing maxillary dentures were placed immediately after modifications on the same day. After 6 months, the definite prosthesis consisted of screw retained milled BioHPP framework bonded to acrylic resin teeth and denture base. The prosthesis restored lost teeth, hard and soft tissues (hybrid fixed prosthesis). Plaque and gingival index, probing depth, implant mobility and bone loss (measured by standardized periapical radiographs) were evaluated after prosthesis delivery (T0), six months (T6) and 12 months (T12) after delivery. Results: Two implants failed in one patient resulting in 91.7% survival rate. Plaque index increased with time. No difference in gingival index, pocket depth, implant stability, and vertical bone loss between observation times was noted. Posterior implant showed higher plaque scores and pocket depth than anterior implants after 6 and 12 months and no significant difference in all other parameters between anterior and posterior implants was noted. Conclusion: Within the limitation of this study, PEEK hybrid prosthesis bonded to acrylic resin teeth and denture base can be used successfully to rehabilitate patients with atrophic maxilla according to “All on four” concept as it was associated with favourable clinical and radiographic outcomes after one year
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    FOUR IMPLANT SUPPORTED MANDIBULAR OVERDENTURES WITH RIGID TELESCOPIC ATTACHMENTS. A STUDY OF CIRCUMFERENTIAL BONE RESORPTION USING CONE BEAM COMPUTERIZED TOMOGRAPHY
    (EDJ, 2020-04) El Talawy, Dina Bahgat; Ali, Samer Mostafa
    Aim: This study aimed to evaluate circumferential bone resorption around implants supporting mandibular overdentures with rigid telescopic attachments. Materials and methods: Eight totally edentulous participants with adequate remaining bone mesial and distal to the mental foramen received four implants in canine and first molar areas of the mandible. After 3 months of osseointegration, telescopic attachments were connected to the denture. Marginal bone resorption was measured around canine and molar implants using Cone beam computerized tomography (CBCT) at base line, 6 months (6m), and 12 months (12m) after overdenture insertion. Results: The survival rate was 97% after one year. The mean marginal bone resorption at all implant surface combined together is 1.41±.54mm. Posterior implants were associated with significant higher marginal bone resorption than anterior implants for distal, lingual and mesial surfaces. The highest marginal bone resorption was noted at the lingual surface followed by mesial surface, then distal surface and the lowest marginal bone resorption was noted with buccal surface. For lingual, mesial and buccal implant surfaces of anterior implants, bone resorption at 12m was significantly higher than bone loss at 6m. Conclusion: Despite the limitation of this study, implants supporting mandibular overdentures with rigid telescopic attachments is a successful treatment option for edentulous mandible. However, this treatment modality is associated with increased bone loss around molar implants compared to canine implants. Also, the lingual implant surface was associated with significant higher bone resorption than other implant surfaces after one year of loading.