Prognostic Factors of Combined Periodontal and Endodontic Lesions: A Retrospective Study

Table 2

Grouping criteria for patient response.

Degree	Characteristics
Cure	The patient has no symptoms, and the chewing function has improved. Clinical examination showed no gingival swelling, SBI <1, PD <3 mm, no increase in CAL, decrease in TM, no sinus or fistula on the buccal and lingual side, no percussion pain, and no shadow in the apical area on X-ray films. The alveolar bone density was normal
Improve	The patient had no symptoms, and the chewing function improved. Clinical examination showed mild inflammation of the affected teeth and gingiva, PD <4 mm, SBI <2, no increase in CAL, decrease in TM, no sinus or fistula on the buccal and lingual side, no percussion pain, and X-ray showed that PAl was decreased and less than or equal to 1
Invalid	The lesion continues to progress, the patient has conscious symptoms, and the teeth cannot drive to the normal chewing function. On clinical examination, the gums was red and swollen, PD >5 mm, increased CAL, SBI >3, TM, unchanged or enlargement of the sinus or fistula hole, percussion pain (+), X-ray showed the presence of shadows in the apical area and PAl

Among them, “cure” and “improve” are recorded as the effective group, and “invalid” is the invalid ineffective group.