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Table 5 Associations between the number of teeth lost due to periodontal disease during SPT and a combination of TRP assessment and the number of teeth lost by the start of SPT (Cox proportional hazards model)

From: Predictive factors for tooth loss during supportive periodontal therapy in patients with severe periodontitis: a Japanese multicenter study

TRP assessment

Number of teeth lost

Total

Teeth loss due to periodontal disease during SPT

HR

95% CI

p value

n

Person-years

Rate

Favorable

< 8

47

4

234.9

0.0170

1.00

 

Favorable

≥ 8

14

4

61.7

0.0649

3.70

0.91–14.98

0.067

Poor

< 8

19

6

100.2

0.0599

3.48

0.98–12.35

0.053

Poor

≥ 8

2

2

6.2

0.3243

20.17

3.45–118.12

0.001

  1. HR hazard ratio, CI confidence interval, TRP therapy-resistant periodontitis