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Dentin hypersensitivity (DH) is defined as short and sharp pain caused by external stimuli such as heat, vaporization, contact, osmotic
pressure, and chemical stimulation in a normal tooth, rather than due to disease or tooth damage. Its solution is to block the flow
of dentinal fluid by physically blocking the dentinal tubule. Of these treatments, fluoride and oxalate type for hypersensitivity can only
have a temporary effect. Resins should be used with a suitable bonding system and they may cause hypersensitivity symptoms after
treatment. Overcoming these limitations, there is a need for method that can effectively treat dental hypersensitivity lasting long without
any side effects. For this reason, experiments with 200 plant extracts as candidates for dentin hypersensitivity, Buddleja officinalis was
considered as a candidate for present study. The purpose of this study is to confirm whether the ethanol extract of Buddleja officinalis
is effective to protect enamel and dentin by coating tooth surface and resistance to acid or alkali even after tooth coating.
Key words : Dentin hypersensitivity, Tooth Coating, Buddleja officinalis