Ashok Soni

Stabilized record bases for complete dentures

A step-by-step technique has been described to construct stabilized record bases which allows the dentist to take advantage of undercuts through the use of a resilient denture liner material in the undercut regions. The resilient denture liner material protects the rugae and prevents damage to the casts in the undercut regions during repeated placing and removal from the cast. Shellac denture base material at the posterior limit of the record base permits an easy method of checking the posterior palatal seal. The incorporation of the posterior palatal seal in the record base allows for adequate retention during the recording of the maxillomandibular jaw relation records and try-in procedures. The record bases made by the sprinkle-on technique are preferred to those made using the dough method. The bases are rigid, stable, not easily broken or warped, and fit accurately.

Modified boxing technique for mandibular impressions

Summary A modification of the traditional boxing of mandibular impressions has been presented to achieve a recessed tongue space for greater visibility of the lingual artificial tooth arrangement.

Boxing the tongue region in mandibular irreversible hydrocolloid impressions

Alginate (irreversible hydrocolloid) impression material is routinely used for making impressions for diagnostic casts. The resultant diagnostic cast should be neat and esthetically pleasing as it is used to educate the patient. However, it is difficult to box mandibular irreversible hydrocolloid impressions, especially in the tongue region (Fig. 1). Materials such as tissue paper and wet asbestos may result in a rough lingual region requiring excessive trimming. The following method will improve the appearance of the diagnostic cast. 1. Make a thick mix of irreversible hydrocolloid impression material and adapt it to the tongue region. Fig. 2. Irreversible hydrocolloid impression material adapted to tongue region.

Use of adhesive vinyl tooth forms as an aid in the arrangement of artificial teeth

e arrangement of artificial teeth for complete ( : ltures is a difficult technical procedure for the dental 5:‘. (lent, particularly the first time. The use of adhesive \ i~ :1 tooth forms can serve as a helpful adjunct to :-r~plify the arrangement of artificial teeth for the c _: lent, dentist, or technician. Previously produced tooth forms (H. I). Justi Co., Oxnard, Calif.) did not have adhesive backing. However, vinyl tooth forms with adhesive backing can be luted easily to the mounted occlusion rims with the guidelines already marked (Fig. 1’1.