Mini implants osseointegration, molar intrusion and root resorption in Sinclair minipigs
| العنوان: | Mini implants osseointegration, molar intrusion and root resorption in Sinclair minipigs |
|---|---|
| المؤلفون: | Hernâni Gerós, Armandino Alves, Fidel San Roman, Américo Afonso, Alberto Cacho |
| المساهمون: | Universidade do Minho |
| المصدر: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| بيانات النشر: | Elsevier Masson, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Molar, Tooth Movement Techniques, Maxillary sinus, Swine, Anchorage, Ciências Biológicas [Ciências Naturais], Sinus Floor Augmentation, Dentistry, Orthodontics, Root resorption, Mandible, Osseointegration, Bone remodeling, 03 medical and health sciences, Intrusion, 0302 clinical medicine, Osteogenesis, Orthodontic Anchorage Procedures, medicine, Animals, Bicuspid, 030212 general & internal medicine, Dental Implants, Bone growth, Ciências Naturais::Ciências Biológicas, Science & Technology, business.industry, Orthodontic mini-implants, 030206 dentistry, medicine.disease, medicine.anatomical_structure, Models, Animal, Swine, Miniature, Bone implant contact, Bone Remodeling, Implant, business |
| الوصف: | Summary Aim The use of mini implants to create a passive intraoral anchorage point has been mainly tested in clinical trials. In this study, an experimental integrated approach evaluated mini implant loading protocols (immediate vs. delayed loading) on bone remodelling and mini implant stability and the consequent degree of dental intrusion and apical root resorption. Methods A total of 40 Absoanchor® mini implants with 1.2 mm diameter and 8 mm length were placed in a total of 5 minipigs, 8 per animal, 2 in each hemiarch. Each implant was attached through a lingual button to the vestibular side of the second and fourth premolars with a nitinol coil spring of 150 g force. The analysis of morphological aspects included the degree of dental movement, mini implant stability, and new bone formation over the mini implant heads. Bone mini-implant interface and modifications of dental root in response to intrusion were studied by light and electron microscopy. Results The rate of mini implant success was > 98%, mainly in those subjected to immediate loading. This loading protocol promoted a high degree of osseointegration along with a high degree of intrusive dental movement, particularly of the second premolars. However, the radiological and histological studies showed a low degree of root resorption. Associated with the high intrusive movement, the penetration of the root apexes produced an inner cortical surface deformation of the maxillary sinus floor by remodeling and bone growth. Conclusion In minipigs immediate loading of smooth mini implants promoted a high degree of intrusive movement particularly of the second premolars, stimulated bone growth and osseointegration, but extensive root resorption was not observed. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44f109901de452ae56e6b58142403149Test https://hdl.handle.net/1822/73102Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....44f109901de452ae56e6b58142403149 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |