Changes in Peri-Implant Bone Level and Effect of Potential Influential Factors on Dental Implants in Irradiated and Nonirradiated Patients Following Multimodal Therapy Due to Head and Neck Cancer: A Retrospective Study
| Autor: | Carmen Stromberger, Katja Nelson, Susanne Nahles, Nicole Ernst, Claudia Sachse, Jan D. Raguse |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Adult
Male medicine.medical_treatment Alveolar Bone Loss Dentistry 03 medical and health sciences 0302 clinical medicine Tongue Radiography Panoramic Alveolar Process Humans Medicine Aged Retrospective Studies Aged 80 and over Dental Implants business.industry Alveolar process Dental Implantation Endosseous Head and neck cancer Mandible Retrospective cohort study Multimodal therapy 030206 dentistry Middle Aged medicine.disease Combined Modality Therapy Radiation therapy Treatment Outcome medicine.anatomical_structure Otorhinolaryngology Head and Neck Neoplasms 030220 oncology & carcinogenesis Maxilla Carcinoma Squamous Cell Female Surgery Oral Surgery business |
| Zdroj: | Journal of Oral and Maxillofacial Surgery. 74:1965-1973 |
| ISSN: | 0278-2391 |
| DOI: | 10.1016/j.joms.2016.06.005 |
| Popis: | Purpose The aim of the present study was to evaluate changes in the marginal bone level of dental implants in irradiated and nonirradiated patients and to identify possible influential factors. Materials and Methods Thirty-six patients with 194 implants were involved in the study (7 women and 29 men). The mean age of the patients was 65.8 years (39 to 90 yr). In all patients, a squamous cell carcinoma in the floor of the mouth involving the mandible or tongue was surgically removed. In 17 patients, adjuvant radiochemotherapy was completed a minimum of 6 months before implant placement. Mean crestal bone changes using standardized orthopantomographs were evaluated. The Spearman rank-order correlation coefficient and Mann-Whitney U test were used to determine correlations between bone crestal changes and age, gender, radiation therapy (yes vs no), augmentation (yes vs no), and type of superstructure. Results In total, 194 implants were placed (73 in the maxilla and 121 in the mandible). Mean amounts of peri-implant bone loss were 1 mm mesially and 0.9 mm distally after 1 year and 1.4 mm mesially and 1.3 mm distally after 3 years. During the observation period, 4 implants were lost. The overall success rate was 98.4% (maxilla, 100%; mandible, 96.7%). There was no relevant difference in changes in bone level according to age, gender, prosthetic superstructure, or augmentation procedure (yes vs no). Radiation therapy was found to have an effect on crestal bone loss. Conclusion The present study showed a high success rate of dental implants after 3 years. Peri-implant crestal bone loss was comparable to that in patients without tumor. The mean amount of crestal bone change in irradiated patients was twice as high as that in nonirradiated patients. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|