PMC5996655_01
Casts poured from sectional impressions
NJMS-9-90-g002.jpg
PMC5996655_01_NJMS-9-90-g002.jpg
F2
They were poured in improved dental stone and casts thus obtained were labeled as Cast A and Cast B [Figure 2]. A saw cut was made between 35 and 36 at a 90  angle to the central fossa of 36 and median groove of 35 on both the sectional Casts A and B [Figure 2].
Sectioned casts joined to make a working cast
NJMS-9-90-g003.jpg
PMC5996655_01_NJMS-9-90-g003.jpg
F3
The portions A1 and B2 were joined with cyanoacrylate resin (Fevikwik) [Figure 3].
Palatally based guidance interim prosthesis at closure
NJMS-9-90-g004.jpg
PMC5996655_01_NJMS-9-90-g004.jpg
F4
The prosthesis was inserted in patient's mouth, was worn during the healing period till the completion of definitive guiding prosthesis [Figure 4].
Cameo surface of the prosthesis
NJMS-9-90-g005.jpg
PMC5996655_01_NJMS-9-90-g005.jpg
F5
It was finished and polished after 8 h to allow polymerization shrinkage to occur and residual stresses to release [Figure 5].
Guidance prosthesis during closure
NJMS-9-90-g006.jpg
PMC5996655_01_NJMS-9-90-g006.jpg
F6
The prosthesis was tried in the patient's mouth and care must be taken not to impinge the gingivae of maxillary teeth [Figure 6].