Retrospective Evaluation of the Influence of the Collar Surface Topography on Peri-implant Bone Preservation
| Autor: | Bruno Salles Sotto-Maior, Carlos Eduardo Francischone Júnior, Carlos Eduardo Francischone, Jose Alfredo Mendonça, Neuza Maria Souza Picorelli Assis, Plinio Mendes Senna |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Surface Properties Radiography Alveolar Bone Loss Dentistry 02 engineering and technology Mandible Bone remodeling Collar 03 medical and health sciences 0302 clinical medicine Maxilla Medicine Humans Retrospective Studies Dental Implants Bone preservation business.industry Dental prosthesis Dental Implantation Endosseous 030206 dentistry General Medicine Radiography Dental Digital Middle Aged 021001 nanoscience & nanotechnology Peri-Implantitis Dental Prosthesis Design Female Implant Dental Prosthesis Implant-Supported Oral Surgery 0210 nano-technology business |
| Zdroj: | The International journal of oralmaxillofacial implants. 32(4) |
| ISSN: | 1942-4434 |
| Popis: | Purpose: To evaluate the influence of the collar surface topography on peri-implant marginal bone preservation. Materials and Methods: A total of 156 patients who received at least one cylindrical implant of regular diameter with an external-hexagon platform in the posterior region of the maxilla or mandible were recalled to the office for a retrospective evaluation. Implantation sites and implant length information were recorded, and implants were divided according to the collar surface topography: machined (M) or rough (R) surface. Each implant was assessed by digital periapical radiography, using a sensor holder for the paralleling technique. The marginal bone remodeling was determined as the distance from the implant platform to the first bone-to-implant contact, and the known implant length was used to calibrate the images in the computer software. The follow-up measurements were compared with those obtained from the radiograph taken at the time of prosthetic loading to determine the late bone remodeling. An independent t test was used to compare data. Results: From 138 patients who attended the recall, 242 implants (M = 126; R = 116) were evaluated with a mean follow-up period of 4.6 ± 0.9 years. Similar success rates were found in both groups (M = 95.0%; R = 95.9%). Late bone remodeling in the maxilla was not influenced by the implant collar (P = .504); however, lower marginal bone loss was observed in the R group (1.20 ± 0.52 mm) compared with the M group (1.58 ± 0.73 mm) in the mandible (P = .007). Conclusion: Although the implant collar design did not influence the success rate of dental implants, the rough collar design reduced the late marginal bone remodeling around external-hexagon implants in the mandible. The maxilla was not benefited by the rough collar design. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|