Once again, there is great inter-individual variation… some people will build up tartar very quickly and be much more prone to gingival inflammation and the development of periodontal disease. An oral health maintenance program may involve a dental hygiene session every 3 months (4 sessions/year) for some situations, and only one session every 18 months for others. Your oral health maintenance program will be set up directly with your dental hygienist in the dental chair.