"Tray for application of medications to teeth and adjacent gum tissue for treatment of periodontal disease." A tray set for at least some of a patient's teeth in the upper or lower arch is provided for application of medications to the tooth and adjacent gum tissue for treatment of periodontal disease. The tray is constructed of elastic molded material to conform to teeth and gum tissue. The tray includes at least one recess formed according to the tooth. a seal surrounding the recess at a location corresponding to the patient's gingival line for applying pressure to the patient's gingival line when the patient's teeth are arranged in the recess. the undercut contains a quantity of medication. under the patient tray installation on the patient's tooth, the medication is forced onto the tooth surface and subgengively sealed within any pouch in the patient's gum next to the tooth, if desired, a propelling agent may be disposed within the recess. such that upon application of the tray over the patient's tooth, the propelling agent produces pressure within the recess such that upon application of the tray over the patient's tooth, the propelling agent produces pressure within the recess such as at a positive force. the medication on the patient's tooth and inside any of the patient's gum pockets close to the tooth. Methods of tray production and for applying medication to the patient's tooth and gum are also described."bandeja para aplicação das medicações aos dentes e ao tecido gengival adjacente para o tratamento de doença periodental". uma bandeja ajustada para pelo menos alguns dentes de um paciente no arco superior ou inferior é provida para uma aplicação de medicações ao dente e ao tecido gengival adjacente para tratamento de doenças periodentais. a bandeja é construída de material moldado elástico para conformar aos dentes e tecido gengival. a bandeja inclui pelo menos um rebaixo formado conforme ao dente. uma vedação rodeando o rebaixo em uma localização corresp
