The Experts below are selected from a list of 177 Experts worldwide ranked by ideXlab platform

Gerry M Raghoebar - One of the best experts on this subject based on the ideXlab platform.

  • implant retained overdentures compared with complete dentures with or without Preprosthetic Surgery a prospective study followed over 10 years
    Nederlands Tijdschrift Voor Tandheelkunde, 2005
    Co-Authors: H J A Meijer, Gerry M Raghoebar, Van T Hof
    Abstract:

    The aim of this prospective randomized clinical trial was to evaluate and compare a set of clinical items and satisfaction of a group of edentulous patients during a ten-year follow-up. They were treated according to one of the following modalities: 61 patients with a mandibular overdenture on two implants (IMP-group), 60 patients with conventional complete dentures (VP-group) and 28 patients with a complete denture after Preprosthetic Surgery (MVP-group). It can be concluded that enosseous implants, serving as retention for a mandibular overdenture, have a high survival rate after ten years of follow-up (93%). The mean satisfaction score of the VP-group was lower than that of the IMP-group. The mean satisfaction score of the MVP-group was lower than that of the IMP-group.

  • reconstructive Preprosthetic Surgery 2 pre implantologic Surgery
    Nederlands Tijdschrift Voor Tandheelkunde, 2004
    Co-Authors: Gerry M Raghoebar, P J Schoen, Arjan Vissink
    Abstract:

    Reconstructive Preprosthetic Surgery is, amongst others, aimed at the creation of an environment which is favourable to the construction of an implant supported prosthesis. Not in all cases the pre-existent volume of bone is sufficient to place an implant in the planned position. In this paper various techniques to augment local bone defects for reliable implant placement are described.

  • reconstructive Preprosthetic Surgery 1 corrections of soft tissues and bone
    Nederlands Tijdschrift Voor Tandheelkunde, 2004
    Co-Authors: Gerry M Raghoebar, P J Schoen, Arjan Vissink
    Abstract:

    The aim of reconstructive Preprosthetic Surgery is the creation of an environment of hard and soft tissue which is favourable to the function of an aesthetically optimal prosthesis, with or without oral implants. In this paper, various Preprosthetic surgical treatments for correcting soft and hard tissues are discussed.

  • implant retained overdentures compared with complete dentures with or without Preprosthetic Surgery satisfaction and subjective chewing capabilities
    Nederlands Tijdschrift Voor Tandheelkunde, 2002
    Co-Authors: H J A Meijer, Gerry M Raghoebar, Van T Hof, M E Geertman
    Abstract:

    The aim of this prospective randomized clinical trial was to evaluate and compare a set of clinical items and satisfaction of a group of edentulous patients during a 5-year follow-up. They were treated according to one of the following modalities: 61 patients with a mandibular overdenture on two implants (IMP-group), 60 patients with a conventional complete denture (VP-group) and 28 patients with a complete denture after Preprosthetic Surgery (MVP-group). It can be concluded that endosseous implants, serving as retention for a mandibular overdenture, have a high survival rate after 5 years of follow-up (93%). The mean satisfaction score of the VP-group was lower than of the IMP-group. The mean satisfaction score of the MVP-group is lower than of the IMP-group.

  • patient satisfaction and chewing ability with implant retained mandibular overdentures a comparison with new complete dentures with or without Preprosthetic Surgery
    Implant Dentistry, 1996
    Co-Authors: E M Boerrigter, Gerry M Raghoebar, Boudewijn Stegenga, Geert Boering
    Abstract:

    Abstract Purpose : The objective of this study was to compare denture satisfaction and chewing ability of edentulous patients treated with dental implant-retained overdentures or with full dentures with or without previous Preprosthetic Surgery. Patients and Methods : This study was a controlled clinical trial. Thirty-eight men and 52 women participated in the study. The mean height of the anterior mandible was 21 mm (range, 16 to 25 mm), measured on a lateral cephalometric radiograph. The subjects were randomly assigned to the three treatment modalities. The main outcome measures were denture satisfaction and chewing ability, which were assessed using questionnaires focusing on denturerelated complaints and the ability to chew different types of food, and an overall denture satisfaction score. Results : Based on the baseline data from the “denture complaints” and “chewing ability” questionnaires, nine interpretable factors could be extracted. Two factors did not vary following treatment and were excluded from the outcome analysis. At the 1-year evaluation five of seven factors showed significantly better scores for the two surgical groups than for the control group. The same was found for the overall denture satisfaction rate. Conclusion : Overdentures retained by dental implants or complete dentures made after a vestibuloplasty and deepening of the floor of the mouth provide a more satisfactory solution for denture-related problems than complete dentures alone. For the scale “functional complaints lower denture,” the overdenture group showed even a significantly better score than the Preprosthetic Surgery group.

Arthur B Novaes - One of the best experts on this subject based on the ideXlab platform.

  • Preprosthetic periodontal Surgery in the proximal area with modification of the col area results following the reestablishment of the contact point
    Journal of Periodontology, 2006
    Co-Authors: Vula Papalexiou, Arthur B Novaes, Guilherme O Macedo, Sonia Mara Luczyszyn, Valdir Antonio Muglia
    Abstract:

    Background: Anatomic characteristics of interproximal areas are dependent on the anatomy, position, and proximal contact of adjacent teeth. The objective of this study was to investigate the influence of the reestablishment of the interproximal contact following the restorative alveolar interface (RAI) procedure on the interproximal gingival COL and formation of the interdental gingival papilla. Methods: Six mongrel dogs received bilateral apically positioned flaps, crown lengthening, and the RAI procedure on the maxillary fourth bicuspid and first molar. After 2 weeks, in a randomized manner, one side was prepared to receive metallic crowns and the opposite side remained as the control. The crowns were cemented at the 4-week postoperative period, and the dogs were sacrificed after another 4 weeks, totaling a period of 4 weeks with the full crowns in position and a total of 8 postoperative weeks. Histologic specimens were stained with hematoxylin and eosin and Mallory dyes. Sections 6 μm thick were obtained in a bucco-lingual plane allowing ample visualization of the interproximal area. Results: Clinical measurements revealed that, in the restored sides, four animals had complete fill of the interdental spaces with gingival papilla, whereas the other two dogs had a distance from the contact point to the tip of papilla varying from 0.02 to 0.021 mm. In the control group, papillae were totally reepithelialized with keratinized epithelium and a convex form. The epithelium completely covered the connective tissue and showed both epithelial projections and surface desquamation. On the test group, despite the presence of the prosthesis, the COL morphology modified by Preprosthetic Surgery was not altered, presenting a convex papilla with a triangular form and with a keratinized epithelium. Additional histologic characteristics were the same as found in the control group. Conclusion: Based on the results of this study, the reestablishment of the contact point does not revert what was obtained with the RAI procedure; the interproximal tissues remain convex and keratinized.

  • Preprosthetic periodontal Surgery in the interproximal area with modification of the col area anatomic and histologic study in dogs
    Journal of Periodontology, 2001
    Co-Authors: Arthur B Novaes, Paulo Tambasco De Oliveira
    Abstract:

    Background: Due to its concave morphology, a COL creates difficulties for proper oral hygiene. When this characteristic is accentuated by tooth position or caries and when restorations are necessary, they should be corrected by Preprosthetic Surgery. However, there are no data proving the efficacy of the procedures. The purpose of this study was to evaluate tissue response to Preprosthetic Surgery to modify COL morphology. Methods: Five mongrel dogs received apically positioned flaps, osteotomy/plasty, and RAI (restorative alveolar interface technique) on the maxillary right third bicuspid and first molar; on the same teeth on the left side, a large tissue excision similar to gingivectomy and RAI were performed. Histologic specimens stained with hematoxylin and eosin and Mallory were evaluated at hour 0 and 1, 2, 3, and 4 weeks under light microscopy. Results: At hour 0, hemorrhage in the remaining interproximal tissue on the left side, and denuded bone modified by the osteotomy on the right side, were ob...

A Kerscher - One of the best experts on this subject based on the ideXlab platform.

  • the optimal vestibuloplasty in Preprosthetic Surgery of the mandible
    Journal of Cranio-maxillofacial Surgery, 1997
    Co-Authors: T Froschl, A Kerscher
    Abstract:

    Two studies (1981-1990 retrospective, and 1989-1993 prospective) were performed to determine the optimal methods in Preprosthetic Surgery. The first study deals with four different types of grafts (split-thickness skin, mucosal, mesh mucosal, palatal) in combination with vestibuloplasties and lowering of the floor of the mouth. The parameters, vestibular depth, mobility and resilience of the transplants were examined. Keratinized grafts (split-thickness skin and palatal) showed advantages. On the basis of a high rate of complications at the site of harvesting of palatal mucosa and the limited amount of palatal mucosa available for grafting, we prefer a split-thickness skin graft. A second prospective study to compare the Edlan- and Kazanjian-plasty showed the disadvantages of both methods. The Edlan-plasty, in combination with implants, showed a small amount of bone resorption; the Kazanjian-plasty showed a significant loss of attached mucosa. Both methods were therefore abandoned in our clinic. For cases with insufficient width of attached mucosa, we recommend a vestibuloplasty secondarily, with keratinized grafts. If there is a deep palatal vault and the need for a large amount of graft material, a split-thickness skin graft should be harvested. In cases of limited need and flat palatal vault, the graft can be harvested from the palate.

Valdir Antonio Muglia - One of the best experts on this subject based on the ideXlab platform.

  • Preprosthetic periodontal Surgery in the proximal area with modification of the col area results following the reestablishment of the contact point
    Journal of Periodontology, 2006
    Co-Authors: Vula Papalexiou, Arthur B Novaes, Guilherme O Macedo, Sonia Mara Luczyszyn, Valdir Antonio Muglia
    Abstract:

    Background: Anatomic characteristics of interproximal areas are dependent on the anatomy, position, and proximal contact of adjacent teeth. The objective of this study was to investigate the influence of the reestablishment of the interproximal contact following the restorative alveolar interface (RAI) procedure on the interproximal gingival COL and formation of the interdental gingival papilla. Methods: Six mongrel dogs received bilateral apically positioned flaps, crown lengthening, and the RAI procedure on the maxillary fourth bicuspid and first molar. After 2 weeks, in a randomized manner, one side was prepared to receive metallic crowns and the opposite side remained as the control. The crowns were cemented at the 4-week postoperative period, and the dogs were sacrificed after another 4 weeks, totaling a period of 4 weeks with the full crowns in position and a total of 8 postoperative weeks. Histologic specimens were stained with hematoxylin and eosin and Mallory dyes. Sections 6 μm thick were obtained in a bucco-lingual plane allowing ample visualization of the interproximal area. Results: Clinical measurements revealed that, in the restored sides, four animals had complete fill of the interdental spaces with gingival papilla, whereas the other two dogs had a distance from the contact point to the tip of papilla varying from 0.02 to 0.021 mm. In the control group, papillae were totally reepithelialized with keratinized epithelium and a convex form. The epithelium completely covered the connective tissue and showed both epithelial projections and surface desquamation. On the test group, despite the presence of the prosthesis, the COL morphology modified by Preprosthetic Surgery was not altered, presenting a convex papilla with a triangular form and with a keratinized epithelium. Additional histologic characteristics were the same as found in the control group. Conclusion: Based on the results of this study, the reestablishment of the contact point does not revert what was obtained with the RAI procedure; the interproximal tissues remain convex and keratinized.

Mahdi Gholami - One of the best experts on this subject based on the ideXlab platform.

  • comparison of vestibular depth relapse and wound healing after reconstructive Preprosthetic Surgery using cryopreserved amniotic membrane and acellular dermal matrix a comparative study
    annals of maxillofacial surgery, 2021
    Co-Authors: Danial Babaki, Masoumeh Khoshsimaybargard, Sanam Yaghoubi, Mahdi Gholami
    Abstract:

    Introduction: The significance of membranes as wound dressing in oral surgeries has been reported by previous studies. The aim of the present split-mouth randomized clinical study was to assess and compare the wound dressing properties of acellular dermal matrix (ADM) and cryopreserved human amniotic membrane (AM) after reconstructive Preprosthetic oral Surgery. Materials and Methods: Twenty-eight patients with complete mandibular edentulism and resorbed alveolar bone were included. After taking mandibular impression, a clear acrylic splint with increased labial flange height was created. In each participant, labial vestibular depth was elevated using the Clark's technique. Subsequently, half of the exposed periosteum was covered with ADM while the other half was covered with cryopreserved human AM. Vestibule depth and relapse in the two sides were measured immediately after vestibuloplasty and at the end of the 1st week, 2nd week, 1st month, and 3rd months with graduations of 0.1 mm. Furthermore, after 3 and 7 days, samples were collected from graft material, and the macrophage population was analyzed by flow cytometry. Results: There was no significant difference in the relapse of vestibule depth between the two grafts at different time intervals. However, the frequency of wound-infiltrating macrophages (CD68+ cells) was significantly higher in areas covered by ADM after 3 and 7 days. Discussion: ADM is as effective as cryopreserved AM in terms of maintaining the postoperative vestibular depth. On the other hand, our results suggested that the onset of healing phase in ADM-covered areas occurs faster compared to the periosteum covered with cryopreserved human AM. This clinical trial showed significantly faster postoperative healing onset when ADM was used than when cryopreserved human AM was applied on the periosteum.