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Table 2 Dental extraction characteristics (N = 389)

From: Predictors of osteoradionecrosis following irradiated tooth extraction

Variable

Category

n (%)

Tooth type

Lower incisor/canine

86 (22.1%)

 

Upper incisor/canine

55 (14.1%)

 

Lower premolar

42 (10.8%)

 

Upper premolar

41 (10.5%)

 

Lower molar

75 (19.3%)

 

Upper molar

90 (23.1%)

Tooth pathology

Periapical periodontitis related

145 (37.3%)

 

Caries-related

178 (45.7%)

 

Perio-related

42 (10.8%)

 

Mixed caries-perio related

8 (2.1%)

 

Others

4 (1.1%)

 

No data

12 (3.1%)

Procedure

Simple extraction

259 (66.6%)

 

Surgery

125 (32.1%)

 

No data

5 (1.3%)

Operator

Dental Officer

188 (48.3%)

 

Postgraduate

81 (20.8%)

 

Specialist

113 (29.0%)

 

No data

7 (1.8%)

Primary closure

Yes

198 (50.9%)

 

No

186 (47.8%)

 

No data

5 (1.3%)

Antibiotic post-extraction

One antibiotic

255 (65.6%)

 

Multiple antibiotics

84 (21.6%)

 

No antibiotic prescribed

44 (11.3%)

 

No data

6 (1.5%)

Teeth within target volume

Yes

107 (27.5%)

 

No

107 (27.5%)

 

No data

175 (45.0%)

Total dose

Below 60 Gy

122 (31.4%)

 

60 Gy and above

95 (24.4%)

 

No data

172 (44.2%)

Time of extraction post radiotherapy

3 months to 1 year

13 (3.3%)

 

1–5 years

103 (26.5%)

 

> 5 years

273 (70.2%)