Table 1 Demographic, health and habit factors, tumour, radiation, surgery involving the jaws, oral hygiene in patients who had dental extraction post radiotherapy to the head and neck (N = 73)
From: Predictors of osteoradionecrosis following irradiated tooth extraction
Variable | Category | n (%) |
|---|---|---|
Age | 47 (38.5–55.0) |  |
Gender | Male | 41 (56.2%) |
| Â | Female | 32 (43.8%) |
Medical illness | Hypertension | 23 (31.5%) |
| Â | Endocrine-related (DM, Thy) | 14 (19.3%) |
| Â | No other medical illness | 31 (42.4%) |
| Â | Others | 4 (5.5%) |
| Â | No data | 1 (1.4%) |
Smoking status | Smoker | 4 (5.5%) |
| Â | Non-smoker | 59 (80.8%) |
| Â | No data | 10 (13.7%) |
Alcohol intake status | Drinker | 3 (4.1%) |
| Â | Non-drinker | 53 (72.6%) |
| Â | No data | 17 (23.3%) |
Tumour site | Oral | 14 (19.2%) |
| Â | Oropharynx | 6 (8.2%) |
| Â | Nasopharynx | 40 (54.8%) |
| Â | Larynx | 5 (6.8%) |
| Â | Other sites | 8 (11.0%) |
Clinical stage (AJCC) | I | 5 (6.8%) |
| Â | II | 13 (17.8%) |
| Â | III | 18 (24.7%) |
| Â | IV | 18 (24.7%) |
| Â | No data | 19 (26.0%) |
Radiation plan | RT only | 27 (37.0%) |
| Â | Concurrent chemoradiotherapy | 35 (47.9%) |
| Â | No data | 11 (15.1%) |
Type of radiotherapy | 2D RT | 35 (47.2%) |
| Â | 3D CRT | 10 (13.9%) |
| Â | IMRT | 3 (4.2%) |
| Â | No data | 25 (34.7%) |
Pre-radiotherapy surgical intervention | Mandibular surgery | 10 (13.7%) |
| Â | Maxillectomy | 4 (5.5%) |
| Â | Without surgical intervention | 55 (75.3%) |
| Â | No data | 4 (5.5%) |
Oral hygiene status | Good | 6 (8.2%) |
| Â | Moderate | 14 (19.2%) |
| Â | Poor | 44 (60.3%) |
| Â | No data | 9 (12.3%) |
No of teeth removed in a patient | ≤ 3 | 40 (54.8) |
|  | > 3 | 33 (45.2) |
Other late toxicity of RT | Â | Â |
 Xerostomia | Yes | 46 (63.0%) |
| Â | No | 10 (13.7%) |
| Â | No data | 17 (23.3%) |
 Trismus | Yes | 15 (20.5%) |
| Â | No | 51 (69.9%) |
| Â | No data | 7 (9.6%) |