Anatomical consideration for optimal position of orthodontic miniscrews in the maxilla: a CBCT appraisal
| Autor: | Khalid H. Zawawi, Hanadi M. Sabban, Doaa H Alsaggaf, Mohammad S. Al-Zahrani, Maha S. Al Amri, Fahad F. Alsulaimani, Ghassan A. Al-Turki |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Bone thickness Bone Screws lcsh:Medicine 030204 cardiovascular system & hematology 03 medical and health sciences Young Adult 0302 clinical medicine Maxilla Orthodontic Anchorage Procedures Medicine Humans Retrospective Studies Orthodontics business.industry lcsh:R 030206 dentistry General Medicine Cone-Beam Computed Tomography Maxillary Sinus Position (obstetrics) Cross-Sectional Studies Female Original Article Nasal Cavity business |
| Zdroj: | Annals of Saudi Medicine, Vol 40, Iss 4, Pp 330-337 (2020) Annals of Saudi Medicine |
| ISSN: | 0975-4466 0256-4947 |
| DOI: | 10.5144/0256-4947.2020.330 |
| Popis: | BACKGROUND: Orthodontic miniscrews are commonly used as temporary anchorage devices. Bone thickness and bone depth are important factors when placing miniscrews. There are no studies to assess the maxillary bone thickness for optimum miniscrew placement in a Saudi population. OBJECTIVE: Assess the proximity of the maxillary sinus and nasal cavity in areas where miniscrews are usually inserted using cone beam computed tomography (CBCT). DESIGN: Retrospective, cross-sectional. SETTING: Department of maxillofacial radiology in a Saudi dental school. PATIENTS AND METHODS: Using CBCT images, we measured the distance between the maxillary sinus and nasal cavity to the palatal bone, buccal intra-radicular and infrazygomatic crest areas. Mean values (SD) were compared at various locations, including by gender, and correlation with age was calculated. MAIN OUTCOME MEASURE: Mean bone thickness at commonly used sites for orthodontic miniscrew placements in the maxilla. Secondary outcome was the insertion angle in the infrazygomatic crest area. SAMPLE SIZE: CBCT images of 100 patients (50 males and 50 females). RESULTS: The mean (standard deviation) age for the sample was 25.4 (6.5) years with no significant difference between males and females. In the palate, the distance to the nasal cavity and maxillary sinus was greater anteriorly and decreased significantly posteriorly ( P P P CONCLUSION: The distance to the nasal cavity and maxillary sinus was greater in the anterior than posterior areas. There is minimal risk of injuring the maxillary sinus or nasal cavity using the buccal approach. Caution is needed when placing miniscrews in the infrazygomatic crest area. LIMITATIONS: Cross-sectional study from one center; hence, findings cannot be generalized to other populations. CONFLICT OF INTEREST: None. |
| Databáze: | OpenAIRE |
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