TY - JOUR ID - TI - Preparation and modifying a new type of waxes AU - Wafa M Abbas AU - Amer A Taqa AU - Nadira A Hatim PY - 2006 VL - 6 IS - 1 SP - 64 EP - 70 JO - Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان SN - 18121217 19980345 AB - that has almost the same properties of dental modeling wax used in dentistry. Materials and Methods:Three groups of waxes (220 samples) with different compositions regarding its origin (Al–Dorarefinery waxes, natural bees wax–North of Iraq, and commercially available Iraqi waxes), additivessuch as starch, sodium–carboxyl methylcellulose (Na–CMC), rosin, or nylon, and coloring agents wereprepared. The samples were tested for their melting range, 21 samples only had a melting range thatnearly coincides with that of the dental waxes such as Major and Cavex. Results: The resultant 21samples were tested for their softening, trimming, penetration, residue materials and solubility. Only 4samples showed properties that are closely similar to that of Major and Cavex wax. The results ofmelting point ranged from 69–80oC. Softening test showed that the samples which contain nylon, Na–CMC, or rosin were softened without adhering to the fingers. Trimming test showed that they weretrimmed easily and clearly. Penetration test showed that, some samples had the similar measurementsof Major and Cavex wax (0.6–0.9mm). Residue materials showed that all samples had no residue ofwax materials on acrylic teeth after wax elimination procedure. All the prepared waxes were soluble in ether (acetone), and petroleum spirit (benzene). Conclusion: Six new modeling wax materials were prepared according to ADA specification No.24. Three of new wax materials consist of nylon(polystyrene 1.71–2.13%); the other two novel modeling waxes were fabricated by using additive materials (Na–CMC and rosin).

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