THE COMPARISON OF MANDIBULAR COMPLETE DENTURE IMPRESSION MODELS WITH A 3-DIMENSIONAL MEASUREMENT SYSTEM
Abstract
Purpose: The purpose of this study was to investigate with 3 dimensional measurement system whether the stabil condition of mandibular alveolar ridge may recorded by the impression materials.
Materials and Methods: The study was performed on the 14 edentulous patients. Patients were divided in two groups. Zinc-oxide eugenol (ZOE) impression material was used as a final impression material in group I and Polyvinylsiloxane (PVS) impression material was used in group II and the definitive cast was obtained. A final impression was made again from all patient with a impression plaster (IP) by means of the custom tray has a new design for each patient. This custom tray was prepared on the definitive cast. The peripheral border line was drawn roughly and the 14 references point were done on the alveolar ridge on the definitive casts. The photographs of the definitive casts were took by Nikon E2/E2s and the three dimensional images were carried out. Height of alveolar ridge, quantity of denture bearing area and length of peripheral border line was measured on the three dimensional images.
Results: This study showed that all measurement values of the IP were higher than the others. The measurement values of the ZOE were lower than the IP, but not statistically significant (p>0.05). However, the measurement values of PVS showed that the decrease of height of the alveolar ridge was statistically significant (p< 0.05).
Conclusion: The effect of impression materials on the alveolar mucous membrane is vary depending on their properties and the custom tray design. For that reason, it is too important that the choice of impression material and impression technique when the mandibuler complete denture impression is made from edentulous patient has unsupported residual alveolar ridge. It is suggest that an mandibular complete denture impression is made with IP and ZOE.
References
- El-Khodary NM, Shaaban NA, Abdel-Hakim AM. Effect of complete denture impression technique on the oral mucosa. J Prosthet Dent 1985; 53: 543-49.
- Roberts AL. Principles of full denture impression making and their application in practice. J Prosthet Dent 1951; 1: 213.
- Çal kkocao lu S. Tam protezler. Cilt I. 3. Bask . =stanbul 1998.
- Al-Ahmad A, Masri R, Driscoll CF, Von Fraunhofer J, Romberg E. Pressure generated on a simulated mandibular oral analog by impression materials in custom trays of different design. J Prosthodont 2006; 15: 95-101.
- Klein IE, Broner AS. Complete denture secondary impression technique to minimize distortion of ridge and border tissues. J Prosthet Dent 1985; 54: 660-64.
- Frank RP. Controlling pressures during complete denture impressions. Dent Clin North Am 1970; 14: 453-70.
- Masri R, Driscoll CF, Burkhardt J, Von Fraunhofer A, Romberg E. Pressure generated on a simulated oral analog by impression materials in custom trays of different designs. J Prosthodont 2002; 11: 155-60.
- Tan KM, Singer MT, Masri R, Driscoll CF. Modified fluid wax impression for a severely resorbed edentulous mandibular ridge. J Prosthet Dent 2009; 101: 82.
- Takamata T, Hashimoto K, Boone ME, Goodacre CJ. The application of Moire topography to removable prosthodontics. Int J Prosthodont 1989; 2:65-72.
- Yamashita S, Ai M, Geng Q, Sato M, Shinoda H, Ando S. Application of a newly developed 3-D deformation measurement system to prosthetic dentistry. J Oral Rehabil 1996; 23: 849-55. Yaz(Ama Adresi: Dr.Dt.Faik TU8UT
- Cumhuriyet Üniversitesi Di Hekimli i Fakültesi Protetik Di Tedavisi Anabilim Dal Kampüs / S=VAS Tel : 0 346 2191010 / 2758 Faks : 0 346 2191237
- E-posta : tugut78@hotmail.com
Abstract
Amaç: Bu çalışmanın amacı çeşitli ölçü maddeleriyle alınan mandibular alveolar kret ölçülerinin stabilitesinin üç boyutlu bir ölçüm yöntemiyle değerlendirilmesidir.
Gereç ve Yöntem: Bu çalışmada 14 dişsiz hastadan alınan ölçüler kullanıldı. Hastalar iki gruba ayrıldı. Son ölçü maddesi olarak birinci grupta çinko-oksid öjenol (ZOE), ikinci grupta polivinilsiloksan
(PVS) kullanılarak alınan ölçülerden ana modeller elde edildi. Ana modeller üzerinden modifiye şahsi kaşık hazırlanarak hastalardan ölçü alçısı ile yeniden ölçüler alındı. Elde edilen modeller üzerinde sınır çizgileri tahmini olarak çizildi ve alveol kret üzerinde 14 referans noktası belirlendi. Ana modellerin fotoğrafları alındı (Nikon E2/E2s) ve 3 boyutlu görüntüleri elde edildi. Alveolar kret yüksekliği, protezin oturduğu alanın büyüklüğü ve çevresel sınır çizgilerinin uzunluğu 3 boyutlu görüntüler üzerinde ölçüldü.
Bulgular: Bu çalışmada ölçü alçısıyla elde edilen modellerdeki ölçüm değerlerinin diğerlerinden yüksek olduğu görüldü. Ölçü alçısıyla bundan düşük değerlerde ölçüm değerleri gösteren çinko-oksid öjenol ölçü modelleri arasında istatistiksel olarak anlamlı bir fark bulunamadı (p>0.05). Buna karşılık polivinilsiloksan ile elde edilen modellerin ölçüm değerlerinde alveolar kret yüksekliği istatistiksel olarak anlamlı bir azalma gösterdi (p< 0.05).
Sonuç: Ölçü maddesinin alveolar muköz membran üzerindeki etkileri membranın özelliklerine ve şahsi kaşık dizaynına bağlı kalmaktadır. Bu yüzden desteksiz rezidüel kretlere sahip mandibular
tam protez hastalarında ölçü maddesinin ve ölçü tekniğinin seçimi oldukça önemlidir. Mandibular tam protez ölçülerinin ölçü alçısı ve çinko-oksid öjenol ölçü maddesi ile alınması önerilmektedir.
References
- El-Khodary NM, Shaaban NA, Abdel-Hakim AM. Effect of complete denture impression technique on the oral mucosa. J Prosthet Dent 1985; 53: 543-49.
- Roberts AL. Principles of full denture impression making and their application in practice. J Prosthet Dent 1951; 1: 213.
- Çal kkocao lu S. Tam protezler. Cilt I. 3. Bask . =stanbul 1998.
- Al-Ahmad A, Masri R, Driscoll CF, Von Fraunhofer J, Romberg E. Pressure generated on a simulated mandibular oral analog by impression materials in custom trays of different design. J Prosthodont 2006; 15: 95-101.
- Klein IE, Broner AS. Complete denture secondary impression technique to minimize distortion of ridge and border tissues. J Prosthet Dent 1985; 54: 660-64.
- Frank RP. Controlling pressures during complete denture impressions. Dent Clin North Am 1970; 14: 453-70.
- Masri R, Driscoll CF, Burkhardt J, Von Fraunhofer A, Romberg E. Pressure generated on a simulated oral analog by impression materials in custom trays of different designs. J Prosthodont 2002; 11: 155-60.
- Tan KM, Singer MT, Masri R, Driscoll CF. Modified fluid wax impression for a severely resorbed edentulous mandibular ridge. J Prosthet Dent 2009; 101: 82.
- Takamata T, Hashimoto K, Boone ME, Goodacre CJ. The application of Moire topography to removable prosthodontics. Int J Prosthodont 1989; 2:65-72.
- Yamashita S, Ai M, Geng Q, Sato M, Shinoda H, Ando S. Application of a newly developed 3-D deformation measurement system to prosthetic dentistry. J Oral Rehabil 1996; 23: 849-55. Yaz(Ama Adresi: Dr.Dt.Faik TU8UT
- Cumhuriyet Üniversitesi Di Hekimli i Fakültesi Protetik Di Tedavisi Anabilim Dal Kampüs / S=VAS Tel : 0 346 2191010 / 2758 Faks : 0 346 2191237
- E-posta : tugut78@hotmail.com
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Health Care Administration |
| Journal Section | Original Research Articles |
| Authors | |
| Publication Date | October 30, 2011 |
| Submission Date | October 30, 2011 |
| Published in Issue | Year 2009Volume: 12 Issue: 2 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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