| 1. |
- Hirsch, Jan-Mikael, et al.
(författare)
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A clinical evaluation of the Zygoma fixture: one year of follow-up at 16 clinics.
- 2004
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Ingår i: Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons. - : Elsevier BV. - 0278-2391 .- 1531-5053. ; 62:9 Suppl 2, s. 22-9
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: To evaluate treatment outcome with Zygoma fixtures (Nobel Biocare, Göteborg, Sweden) with regard to fixture survival, patient satisfaction, and function of prosthesis replacement. MATERIALS AND METHODS: The treatment outcome of 76 patients treated with 145 Zygoma fixtures at 16 centers was evaluated. Patient's and dentist's evaluations of the functional and aesthetic outcome of the treatment were assessed at delivery of prosthesis and at the 1-year follow-up visit. At the 1-year follow-up visit, the status of the peri-implant mucosa around the abutments and the amount of plaque were registered. RESULTS: Sixty-six of the 76 patients, with 124 Zygoma fixtures supporting the prosthetic restorations, were evaluated at the 1-year follow-up. The overall survival rate for the Zygoma fixtures was 97.9% after 1-year of follow-up. Eighty percent of the patients were fully satisfied with both aesthetic and functional outcome at the time of prosthetic insertion and at the 1-year follow-up. All reported data from the dentists, with the exception of one restoration with several abutment screw loosenings, scored from acceptable to excellent for the aesthetic and functional outcome of the treatment. The status of peri-implant mucosa was recorded as normal in approximately 60% of the sites. Plaque, when present, was more often detected on the palatal surfaces compared with the buccal surfaces. CONCLUSION: This 1-year follow-up of Zygoma fixtures has shown good results with an acceptable number of minor complications and a majority of satisfied patients.
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| 2. |
- Kahnberg, Karl-Erik, 1941, et al.
(författare)
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Clinical evaluation of the zygoma implant : 3-year follow-up at 16 clinics
- 2007
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Ingår i: Journal of oral and maxillofacial surgery (Print). - : Elsevier BV. - 0278-2391 .- 1531-5053. ; 65:10, s. 2033-2038
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: The purpose of this clinical investigation was to evaluate the treatment outcome with zygoma implants with regard to implant survival, patient satisfaction, and function of prosthesis replacement after 3 years. Patients and Methods: The treatment outcome of 76 patients treated with 145 zygoma fixtures at 16 centers was evaluated with regard to implant survival. Status of peri-implant mucosa and amount of plaque were registered annually. Patients' and dentists' evaluations of the functional and esthetic outcome of the treatment were assessed at delivery of prosthesis and thereafter at each follow-up visit. Results: Sixty of 76 patients were followed for 3 years after prosthetic delivery. Five of 145 placed zygoma implants failed during the course of the study resulting in an overall implant survival rate of 96.3%. At the 3-year follow-up, 75% of the implants sites were registered with normal peri-implant mucosa and 68% with no visible plaque. The patients were fully satisfied with the esthetic and functional outcome of the treatment in 86% and 71%, respectively, at the 3-year follow-up visit. All reported data from dentists scored from acceptable to excellent. Conclusion: The multicenter study showed a high predictability of the zygoma implant-supported rehabilitation.
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| 3. |
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| 4. |
- Gynther, Göran W
(författare)
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Inflammatory and degenerative disease in the temporomandibular joint
- 1996
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Temporomandibular joint (TMJ) arthroscopy is an established technique with high diagnostic accuracy regarding synovitis and degenerative changes of the articular fibrocartilage and disk. However, so far no studies have been done to correlate the macroscopic and histologic findings with each arthroscopic criterion. Therefore patients with TMJ internal derangement (ID) were investigated by arthroscopy and arthrotomy (with biopsy) and the findings were compared with observations using light microscopy. TMJ specimens obtained at autopsy were used as controls. On histological examination, inflammation was present in the majority of the patients but not in the controls. Arthroscopy revealed inflammation more accurately than did macroscopic observation at arthrotomy. Reliable arthroscopic criteria for synovitis were capillary hyperemia and synovial hyperplasia. Both correlated well with histologic signs of inflammation. Definite clinical and radiographic criteria for rheumatoid arthritis (RA) of theTMJ have been difficult to establish, and no arthroscopic data have been available. For this reason, the clinical, radiographic, arthroscopic and histologic examinations inpatients with TMJ ID or RA with TMJ signs and symptoms were compared. In RA patients joint crepitation and hard-tissue changes on the tomograms were more frequent and arthroscopic and histologic changes were more pronounced than in those with ID. Generalized osteoarthritis (GOA) is primarily a noninflammatory disease with involvement of three or more joints or groups of joints. This is the first study of the radiographic, clinical, arthroscopic, histologic and immunohistochemical changes in symptomatic TMJs in patients with GOA. The GOA patients were compared with patients having RA and TMJ symptoms. An age-matched autopsy material was used as a control for histologic and immunohistochemical examinations. On the tomograms, osteophytes, flattening of the condyle or a reduced joint space were observed more often in GOA, but erosions in the condyle were commoner in RA. Compared to RA, the radiographic findings in GOA seemed more like those in the common form of localized TMJ osteoarthritis. The frequency of muscle tenderness was the only clinical sign that differed significantly between GOA and RA (commoner in GOA). On arthroscopy, more pronounced inflammatory and degenerative changes were observed in RA patients, despite a shorter duration of symptoms. A correlation between lateral joint tenderness and pronounced synovitis was noted in RA patients. Histologic and immunohistochemical examinations showed equally high frequencies of synovial inflammation in GOA and RA, and differed clearly from those in the controls. The only histologic parameter that differed significantly between patients having GOA and those with RA was connective tissue degeneration (commoner in GOA). Immunohistochemistry (particularly PCNA = monoclonal mouse anti-proliferating cell nuclear antigen) added useful information to the histologic examination. The great similarities between the findings in GOA and in RA patients indicate that supposedly different etiopathogeneses may provoke similar tissue reactions in the joint tissues, but pronounced inflammatory changes and degeneration develop more quickly in RA.
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