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Changes in alveolar bone width around maxillary implants, as determined through cone beam computed tomography based
Szu-Wei Lin1, Kai-Fang Hu2,3, Ying-Chu Lin1
1School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Clinical Implant Dentistry and Related Research
|June 1, 2023
Summary
Dental implant surgery outcomes were assessed using cone-beam computed tomography (CBCT) scans. Anterior nasal spine (ANS) and posterior nasal spine (PNS) served as landmarks for standardizing scans and evaluating alveolar bone changes.
Area of Science:
- Dentistry
- Radiology
- Oral Surgery
Background:
- Alveolar bone width changes around dental implants are crucial for successful outcomes.
- Standardizing cone-beam computed tomography (CBCT) scan orientation is essential for accurate assessment.
- Identifying reliable anatomical landmarks is key for reproducible measurements.
Purpose of the Study:
- To investigate alveolar bone width alterations post-dental implant surgery.
- To identify the anterior nasal spine (ANS), posterior nasal spine (PNS), and nasal floor as reference landmarks.
- To standardize CBCT scan orientation for evaluating dental implant procedures.
Main Methods:
- Two groups of 30 implants were analyzed using CBCT scans.
- The first group assessed distances between ANS/PNS and implant apex post-surgery.
- The second group compared pre- and post-surgery CBCT images to measure alveolar bone width changes relative to landmarks.
Main Results:
- No significant differences in ANS/PNS to implant tip distances were found.
- Alveolar bone width increased at 1mm and decreased at 4mm and 7mm below the crest post-surgery.
- These changes varied based on height and direction from the alveolar bone crest.
Conclusions:
- ANS, PNS, and nasal floor are viable landmarks for standardizing CBCT scans.
- Alveolar bone remodeling after implant surgery is influenced by proximity to these landmarks.
- This standardization aids in accurate assessment of bone changes around dental implants.
