Abstract | BACKGROUND: No long-term clinical studies covering more than 5 years are available on Computer Numeric Controlled (CNC) milled titanium frameworks. AIM: MATERIAL AND METHODS: Altogether, 126 edentulous patients were by random provided with 67 prostheses with titanium frameworks (test) in 23 maxillas and 44 mandibles, and with 62 prostheses with gold-alloy castings (control) in 31 maxillas and 31 mandibles. Clinical and radiographic 10-year data were collected for the groups and statistically compared on patient level. RESULTS: The 10-year prosthesis and implant cumulative survival rate was 95.6% compared with 98.3%, and 95.0% compared with 97.9% for test and control groups, respectively (p > .05). No implants were lost after 5 years of follow-up. Smokers lost more implants than nonsmokers after 5 years of follow-up (p < .01). Mean marginal bone loss in the test group was 0.7 mm (SD 0.61) and 0.7 mm (SD 0.85) in the maxilla and mandible, with similar pattern in the control group (p > .05), respectively. One prosthesis was lost in each group due to loss of implants, and one prosthesis failed due to framework fracture in the test group. Two metal fractures were registered in each group. More appointments of maintenance were needed for the prostheses in the maxilla compared with those in the mandible (p < .001). CONCLUSION: The frequency of complications was low with similar clinical and radiological performance for both groups during 10 years. CNC-milled titanium frameworks are a viable alternative to gold-alloy castings for restoring patients with implant-supported prostheses in the edentulous jaw.
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Authors | Anders Örtorp, Torsten Jemt |
Journal | Clinical implant dentistry and related research
(Clin Implant Dent Relat Res)
Vol. 14
Issue 1
Pg. 88-99
(Mar 2012)
ISSN: 1708-8208 [Electronic] United States |
PMID | 19686283
(Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
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Copyright | © 2009 Wiley Periodicals, Inc. |
Chemical References |
- Dental Implants
- Gold Alloys
- Titanium
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Topics |
- Adult
- Aged
- Aged, 80 and over
- Alveolar Bone Loss
(diagnostic imaging)
- Chi-Square Distribution
- Computer-Aided Design
- Crowns
- Dental Casting Technique
- Dental Implants
- Dental Prosthesis Design
(methods)
- Dental Prosthesis Repair
- Dental Prosthesis Retention
- Dental Prosthesis, Implant-Supported
- Dental Restoration Failure
- Female
- Gold Alloys
- Humans
- Jaw, Edentulous
(rehabilitation)
- Linear Models
- Logistic Models
- Lost to Follow-Up
- Male
- Middle Aged
- Prospective Studies
- Radiography
- Statistics, Nonparametric
- Titanium
- Treatment Outcome
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