Modified functional impression technique for complete dentures.
This report describes the use of a removable acrylic resin tray handle that can be easily attached to custom impression trays to produce an improved peripheral sealing zone. This device can be indicated to develop functional impressions for complete dentures using the patient-conducted muscular motion technique. In upper trays, the handle is fixed in the midline with acrylic resin, while in lower trays the centrally positioned handle is removed before border molding. This removable handle allows patient's suction and free tongue movements. Final impression is carried out in two stages: peripheral sealing (low fusion compound) and recording of the main supporting region of the denture (zinc oxide and eugenol paste). All border records are obtained from the patient's own movements (handle suction and tongue motion). The removable handle is simple to use, is reusable, can be adapted to any individual acrylic resin trays and allows accurate registration of the peripheral sealing zone (border tissues).
Department of Dental Materials and Prosthodontics, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
Alexandre
A
Malachias
Helena de Freitas Oliveira
Hde F
Paranhos
Cláudia Helena Lovato
CH
da Silva
Valdir Antônio
VA
Muglia
Carla
C
Moreto
D000180:Acrylic Resins; D003760:Dental Impression Materials / Q000737:chemistry; D003761:Dental Impression Technique / Q000295:instrumentation; D003779:Denture Design; D003824:Denture, Complete; D004867:Equipment Design; D006801:Humans; D007574:Jaw Relation Record; D008410:Masticatory Muscles / Q000502:physiology; D009068:Movement; D013499:Surface Properties; D014059:Tongue / Q000502:physiology; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
D000180:Acrylic Resins; D003760:Dental Impression Materials; D015035:Zinc Oxide-Eugenol Cement