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Abstract
Introduction
Mandibular third molar extraction is one of the most common procedures performed in oral and maxillofacial surgery units. Although the overall complication rate is low with most complications being minor, mandibular third molar removal is so common that the population morbidity of complications might be significant1,2. Therefore, efforts to limit intraoperative or postoperative complications might have a significant impact in terms of enhancing the patient outcome. The aims of this study were to identify the position and angulation associated complications after mandibular third molar extractions.
Materials and Methods
This study surveyed 568 patients who had a mandibular third molar extracted, showed clinical complications and underwent a radiographic measurement of the available space, depth and spatial relationship.
Results
The results obtained were as follows: 1. The complications were a dry socket, nerve injury, root rest, infection, bleeding, hamatoma, and adjacent teeth injury. 2. There were no significant differences between the complication and ramus relationship (available space) of the mandibular third molar. 3. There were no significant differences between the complications and depth of the mandibular third molar. 4. There were no significant differences between the complications and spatial relationship of the mandibular third molar.
Conclusion
There were no significant differences in the complication rate, ramus relationship, depth and spatial relationship of the mandibular third molar. This suggests that the position and angulation of the mandibular third molar may not have an impact on the complications. The relationship between the position and angulation of the mandibular third molar, and complications deserves a further study using longitudinal data.
References
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Fig. 1.
Space available in mandibular third molar between mandibular second molar and mandibular ramus. A: Sufficient space, B: Reduced space, C: No space. Sun-Pyo Hong et al: Effect on complications associated with its position and angulation following mandibular third molar extraction. J Korean Assoc Oral Maxillofac Surg 2011
Fig. 2.
Depth in mandibular third molar. A: High occlusal level, B: Medium occlusal level, C: Deep occlusal level. Sun-Pyo Hong et al: Effect on complications associated with its position and angulation following mandibular third molar extraction. J Korean Assoc Oral Maxillofac Surg 2011
Fig. 3.
Spatial relationship of mandibular third molar with mandibular second molar axes. Sun-Pyo Hong et al: Effect on complications associated with its position and angulation following mandibular third molar extraction. J Korean Assoc Oral Maxillofac Surg 2011
Table 1.
Sex and age distribution
Table 2.
Distribution of complications in mandibular third molar extraction
| Complication | Total (%) |
|---|---|
| Dry socket | 5 (0.84) |
| Nerve injury | 4 (0.67) |
| Root rest | 2 (0.34) |
| Infection | 2 (0.34) |
| Bleeding | 1 (0.17) |
| Hematoma | 1 (0.17) |
| Adjacent tooth injury | 1 (0.17) |
| Total | 16 (2.69) |
Table 3.
Distribution of complications rate in ramus and mandibular second molar relationship in mandibular third molar
| Space | Total (%) | Complication (%) |
|---|---|---|
| Class I | 216 (36.4) | 2 (0.3) |
| Class II | 281 (47.4) | 10 (1.7) |
| Class III | 96 (16.2) | 4 (0.7) |
| Total | 593 (100) | 16 (2.7) |
| *: P<0.05 |
Table 4.
Depth in mandibular third molar
| Depth | Total (%) | Complication (%) |
|---|---|---|
| Level I | 270 (45.5) | 7 (1.2) |
| Level II | 253 (42.7) | 7 (1.2) |
| Level III | 70 (11.8) | 2 (0.3) |
| Total | 593 (100) | 16 (2.7) |
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