Comparison of the Anchorage Value of the First Molars Supported with Implant and First Molars Supported with Second Molar during En Masse Retraction
| Autor: | Kranthi Praveen Raj, M Kaladhar Naik, Sreekanth Cherukuri, Yellampalli Muralidhar Reddy, Garadappagari Dharmadeep, Vishnuvardhan Reddy |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Orthodontics
Molar temporary anchorage devices business.industry Lateral cephalograms Anchorage mini-implants Mandibular first molar Mandibular second molar molar medicine.anatomical_structure stomatognathic system Maxilla Premolar Medicine Original Article Implant business General Dentistry retraction Anterior teeth |
| Zdroj: | Journal of International Society of Preventive & Community Dentistry |
| ISSN: | 2231-0762 |
| Popis: | Aims and Objectives: The aim of this study was to determine the efficacy of mini-implants as adjuncts for intraoral anchorage units for en masse retraction of maxillary anterior teeth in bimaxillary dentoalveolar protrusion cases. Materials and Methods: The study sample consisted of 15 patients (10 females and 5 males). The samples were compared for anchorage loss with the implant-supported molar and conventional molar contralaterally in both the maxilla and mandible after six months of retraction period. The mini-implants used were 1.5 mm in diameter and 8 mm in length and were inserted in the first and third quadrant between the roots of second premolar and first molar under local anesthesia at an angle of 45°. For en masse retraction, active tiebacks with ligating (100g) were used bilaterally extending from molar hooks to J-hook on a 0.019” × 0.025” stainless steel arch wire. Lateral cephalograms were taken before and after retraction for assessing the loss of anchorage in maxillary and mandibular first molars. Results: Anchorage loss of 1.46 mm in the maxilla and 1.36 mm in mandible was found with conventional molar anchorage, whereas no statistically significant anchorage loss was found in the implant-supported molar side. Conclusion: Implant-supported molar side showed better anchorage compared with the conventional molar side. Hence, implant-supported molar can be used as an absolute anchorage unit in the en masse retraction of anterior teeth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|