The role of tobacco use on dental care and oral disease severity within community dental clinics in Japan

Table 1 Summarization of items for treated diseases and encounters

Category used for analysis		Treated disease and encounter recorded in the questionnaire^a)
Gum/periodontal treatment (GPT)	Early stage ^b)	Gingivitis
		Mild to moderate periodontal disease ^c)
	Advanced stage ^b)	Severe periodontal disease ^c)
Caries/endodontic treatment (CET)	Early stage ^b)	Dental caries
	Advanced stage ^b)	Inflammation of dental pulp
		Apical periodontitis
		Periapical abscess and radicular cyst
Prosthetic treatment (PRT)		Prosthetic treatment
Periodical check-up/orthodontic treatment (POT)		Dental examination ^d)
		Orthodontic treatment
Other encounters/treatments (OET)		Other periodontal diseases ^e)
		Other disorders of teeth and supporting structures
		Other diseases of the oral region, salivary glands and jaws
		Stomatitis and related lesions
		Dental injuries

^a) Items were recorded in the questionnaire on the survey day into five categories for analysis.
^b) This category was used for analysis to compare the distribution of levels of treated diseases within the GPT and CET subpopulations.
^c) Periodontal disease progression was presented as P₁, P₂ and P₃ in the questionnaire, representing mild, moderate and severe periodontal disease, respectively. These codes were adopted according to levels of alveolar bone resorption, probing pocket depth and tooth mobility, and are used by general dentists in the universal health insurance system of Japan.
^d) This category is mainly applicable to health check-ups.
^e) This category is mainly applicable to pericoronitis and gingival abscess.

ISSN: 1617-9625