| 1. |
- Gunne, Johan, et al.
(författare)
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Implant treatment in partially edentulous patients: a report on prostheses after 3 years.
- 1994
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Ingår i: The International journal of prosthodontics. - 0893-2174. ; 7:2, s. 143-8
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Tidskriftsartikel (refereegranskat)abstract
- There has been an increasing interest in the use of implants for partially edentulous patients. This introduces other biomechanical situations than those experienced in completely edentulous patients. In a prospective multicenter study, 521 implants in 154 patients were loaded with 197 free-standing prostheses. The patients have been followed for 3 years. The cumulative success rate for the prostheses was 94.8% and for the implants it was 93.9%. Most of the lost prostheses were only supported by two implants. A frequent technical complication was fracture and loosening of gold screws, which was more frequent in prostheses supported by only two implants.
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| 2. |
- Jemt, Torsten, 1950
(författare)
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Fixed implant-supported prostheses in the edentulous maxilla. A five-year follow-up report.
- 1994
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Ingår i: Clinical oral implants research. - : Wiley. - 0905-7161. ; 5:3, s. 142-7
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Tidskriftsartikel (refereegranskat)abstract
- Seventy-six patients were consecutively treated with fixed prostheses supported by osseointegrated implants in the edentulous maxilla and followed up for 5 years. The mean bone quality and resorption indices were 3.1 and 2.7 at the time of implant placement, respectively. Altogether, 449 standard Brånemark implants were placed. Two patients resumed to complete dentures, and the cumulative implant and prosthesis survival rates were 92.1% and 95.9% for 5 years, respectively. The mean marginal bone level was 0.6 mm below the reference point at the time of placement and 1.2 mm below the same point 5 years later. Speech problems was the most frequent complaint during the first year of function, while resin fractures caused most adjustments during the follow-up period. No implant, abutment or gold alloy screws were found to be fractured, and only 4 patients had their prostheses re-tightened due to loose gold alloy screws.
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| 3. |
- Jemt, Torsten, 1950, et al.
(författare)
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Mucosal topography around implants in edentulous upper jaws. Photogrammetric three-dimensional measurements of the effect of replacement of a removable prosthesis with a fixed prosthesis.
- 1994
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Ingår i: Clinical oral implants research. - : Wiley. - 0905-7161 .- 1600-0501. ; 5:4, s. 220-8
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Tidskriftsartikel (refereegranskat)abstract
- A photogrammetric technique was tested to measure the topography of the mucosa around implants, placed in edentulous upper jaws. Photographs were taken of casts from 6 patients, who all had used a removable overdenture for one year. Another series of photographs was taken on new casts after the use of a fixed prosthesis for a second year. The 6 pairs of photographs were measured and compared in an analytical stereo plotter for surface contour and implant positions. The results from the measurements indicated a trend of general recession of the mucosa after one year with fixed prosthesis, both on the buccal as well as on the palatal side. The mean volume of recession was 222.4 mm3, corresponding to an average of 0.4 mm3/mm2 of mucosa. More recession was generally observed on the palatal side, but obvious variations between the patients were present. In conclusion, the photogrammetric technique was considered to be well suited for analysing tissue contours in various dental situations.
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| 4. |
- Lie, Anders, 1959, et al.
(författare)
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Photogrammetric measurements of implant positions. Description of a technique to determine the fit between implants and superstructures.
- 1994
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Ingår i: Clinical oral implants research. - : Wiley. - 0905-7161 .- 1600-0501. ; 5:1, s. 30-6
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Tidskriftsartikel (refereegranskat)abstract
- A photogrammetric technique was designed to measure the position of dental implants in 3 dimensions to enable assessment of the fit of superstructures placed on the implants. A relatively simple camera set-up was developed and tested. Calibration of the camera was performed in a high-precision analytical plotter and revealed a film measurement accuracy of 0.005 mm. The achieved measuring accuracy for clear and well defined points on clinical components was found to be around 0.02 mm. To find the center points of the implants, points on the circumference were measured. These points are not well defined, which resulted in an estimation of the center point of the implant with a precision of 0.05 mm. Independent measurements of a prosthesis with 5 implants were also within the precision of 0.05 mm. The angular orientation of the top surface of the implant cylinder (abutment, brass replica of gold alloy cylinder of the framework) was measured with a precision of 0.01 radians, which corresponded to an error with a peripheral gap of about 0.03 mm. This value was about 5-10 times lower than the clinical fit between frameworks and abutments, measured in 3 randomly selected clinical cases.
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| 5. |
- Odman, J, et al.
(författare)
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Osseointegrated implants as orthodontic anchorage in the treatment of partially edentulous adult patients.
- 1994
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Ingår i: European journal of orthodontics. - 0141-5387. ; 16:3, s. 187-201
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Tidskriftsartikel (refereegranskat)abstract
- In nine partially edentulous adult patients, mean age 47 years (range 17-64 years) 23 osseointegrated implants were used as orthodontic anchorage to perform the following types of orthodontic tooth movements: tipping, torquing, rotation, intrusion, extrusion, and those associated with bodily movements. The total orthodontic treatment period varied between 4 and 33 months (x = 17 months). Pre-operatively, at the start and end of orthodontic treatment, and at the annual controls, clinical as well as biometric and radiographic (panoramic, lateral cephalograms and periapical radiographs) recordings were performed. The osseointegrated anchorage units were used as reference points for measurements of two- and three-dimensional tooth movements with a co-ordinate machine. The 2-D tooth movements varied between 0.2 and 6.2 mm, whereas movements in the third dimension, extrusion and intrusion, ranged from 0.0 to 13.5 mm. The movement in space for the individual tooth was observed to be, as a mean, 3.9 mm (range 0.6-18.7 mm). However, the osseointegrated titanium implants (fixtures) used as orthodontic anchorage remained in position when orthodontically loaded for the various tooth movements. After completion of the orthodontic treatment the fixtures served as abutments for permanent prosthetic constructions.
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