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Fenestration and dehiscence defects in maxillary anterior teeth using two classification systems
1School of Dentistry, Department of Periodontology, Antalya Bilim University, Antalya, Turkey.
Australian Dental Journal
|December 3, 2022
Summary
Buccal bone thickness (BT) in anterior maxillary teeth is often less than 2mm, with high rates of fenestration (35.66%) and dehiscence (20%). Fenestration is most common in canines, while dehiscence occurs more in the coronal third.
Area of Science:
- Dental Anatomy
- Oral Surgery
- Radiology
Background:
- Buccal bone thickness (BT) is crucial for periodontal health and orthodontic stability.
- Bone fenestration and dehiscence are common findings in the anterior maxilla.
- Cone-beam computed tomography (CBCT) is an effective tool for evaluating these anatomical variations.
Purpose of the Study:
- To assess buccal bone thickness (BT) in anterior maxillary teeth.
- To evaluate and compare the prevalence of bone fenestration and dehiscence.
- To analyze the relationship between these findings and patient age and tooth type.
Main Methods:
- CBCT images of 300 maxillary anterior teeth were analyzed.
- Buccal bone thickness (BT) was measured at multiple levels from the bone crest.
- Fenestration and dehiscence were classified, and statistical analyses (t-test, ANOVA) were performed.
Main Results:
- A high prevalence of thin buccal bone (BT ≤1 mm) was observed in 80.08% of cases.
- Fenestration occurred in 35.66% and dehiscence in 20% of the teeth.
- Fenestration was most frequent in canines and located in the apical third, while dehiscence was more common in the coronal third.
Conclusions:
- Thin buccal bone is prevalent in the anterior maxilla.
- Fenestration and dehiscence are significant findings with varying prevalence based on tooth type and location.
- These anatomical variations have implications for orthodontic treatment and surgical procedures.
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