A comparative study of inter-abutment distance of dies made from full arch dual-arch impression trays with those made from full arch stock trays: an in vitro study.
OBJECTIVE
The dual-arch impression technique is convenient in that it makes the required maxillary and mandibular impressions, as well as the inter-occlusal record in one procedure. The accuracy of inter-abutment distance in dies fabricated from dual-arch impression technique remains in question because there is little information available in the literature.


METHODS
This study was conducted to evaluate the accuracy of inter-abutment distance in dies obtained from full arch dual-arch trays with those obtained from full arch stock metal trays.


CONCLUSIONS
The metal dual-arch trays showed better accuracy followed by the plastic dual-arch and stock dentulous trays, respectively, though statistically insignificant. The pouring sequence did not have any effect on the inter-abutment distance statistically, though pouring the non-working side of the dual-arch impression first showed better accuracy.
Department of Prosthodontics and Oral Implantology, Vydehi Institute of Dental Sciences and Research Centre Whitefield, Bangalore-560 066, India.
Jagan Mohan
JM
Reddy
E
E
Prashanti
G Vinay
GV
Kumar
M C
MC
Suresh Sajjan
Xavier
X
Mathew
D000497:Alloys; D001641:Bicuspid; D000044:Dental Abutments / Q000592:standards; D003725:Dental Articulators; D003760:Dental Impression Materials / Q000737:chemistry; D003761:Dental Impression Technique / Q000295:instrumentation* / Q000592:standards; D003768:Dental Occlusion, Centric; D003779:Denture Design / Q000592:standards; D003830:Denture, Partial, Fixed; D004867:Equipment Design; D006801:Humans; D007574:Jaw Relation Record / Q000295:instrumentation / Q000379:methods; D003765:Models, Dental / Q000592:standards; D008963:Molar; D010969:Plastics; D011145:Polyvinyls / Q000737:chemistry; D012833:Siloxanes / Q000737:chemistry; D013499:Surface Properties
D000497:Alloys; D003760:Dental Impression Materials; D010969:Plastics; D011145:Polyvinyls; D012833:Siloxanes; C034183:vinyl polysiloxane