Figure 7. Completed sectional trays with anterior lock assembled (Mandibular) The anterior locking assembly described in this article does not require any special alteration in the conventional custom tray design. The die-pins with metal sleeves used in this technique provide a greater degree of stability and a precise union of the 2 sections of the tray. It also provides a rigid joint without increasing the bulk of the tray. The joint can be made more rigid by activating the 2 prongs of each dual die-pin away from each other. This technique used for fabricating custom sec- tional impression trays does not require any spe- cial devices or complex locking joints. The only ad- ditional materials used are the dual die-pins which are commercially available at a minimum cost. SUMMARY It is often difficult to use conventional methods for fabricating dentures for patients with limited mouth opening. This article described a simple, time-saving, and cost-effective method used to fabricate custom sectional impression trays for making definitive impressions in patients with mi- crostomia. Acknowledgements The authors do not have any financial interest in the companies whose materials are included in this article. The authors thank Dr. Merlin Menezes, Dr. Nandita Keni and Dr. Shweta Caculo from Goa Dental College and Hospital, Bambolim, Goa for their sincere help and suggestions in developing the technique. July 2012 - Vol.6 Bachhav, Aras REFERENCES 1. The Glossary of Prosthodontic Terms. J Prosthet Dent 2005; 94:52. 2. Smith PG, Muntz HR, Thawley SE. Local myocutaneous ad- vancement flaps. Alternative to cross-lip and distant flaps in the reconstruction of ablative lip defects. Arch Otolaryn- gol 1982;108:714-718. 3. Gay WD. Prostheses for oral burn patients. J Prosthet Dent 1984;52:564-566 4. Reisberg DJ, Fine LB, Fattore L, Edmonds DC. Electrical burns of the oral commissure. J Prosthet Dent 1983;49:71- 76. 5. Wright GZ, Colcleugh RG, Davidge LK. Electrical burns to the commissure of the lips. J Dent Child 1977;44:377-381. 6. Dahl E, Fogh-Andersen P: Electric burns of the mouth, long-term effects on the dentition: Surgical and orthodon- tic considerations. Eur J Orthod 1980;2:207-217. 7. Holt GR, Parel S, Richardson DS, Kittle PE: The prosthetic management of oral commissure burns. Laryngoscope 1982;92:407-411. 8. Leake JE, Curtin JW: Electrical burns of the mouth in chil- dren. Clin Plast Surg 1984;11:669-683. 9. Koumjian JH, Firtell DN. A prosthesis to control microsto- mia. J Prosthet Dent 1990;64:502-503. 10. Conine TA, Carlow DL, Stevenson-Moore P. The Vancouver microstomia orthosis. J Prosthet Dent 1989;61:476-483. 11. Ampil JP, Newell L, Taylor P. A simplified prosthesis for treatment of burns to the oral cavity. J Prosthet Dent 1988;59:608-610. 12. Sela M, Tubiana I. A mouth splint for severe burns of the head and neck. J Prosthet Dent 1989;62:679-681. 13. Geckili O, Cilingir A, Bilgin T. Impression procedures and construction of a sectional denture for a patient with mi- crostomia: A clinical report. J Prosthet Dent 2006;96:387- 390. 14. Conroy B, Reitzlic M. Prosthetic restoration in microstomia. J Prosthet Dent 1971;26:324-327. 15. Luebke RJ. Sectional impression tray for patients with con- stricted oral opening. J Prosthet Dent 1984;52:135-137. 16. Suzuki Y, Abe M, Hosoi T, Kurtz KS. Sectional collapsed denture for a partially edentulous patient with microsto- mia: a clinical report. J Prosthet Dent 2000;84:256-259. 17. Mirfazaelian A. Use of orthodontic expansion screw in fab- ricating section custom trays. J Prosthet Dent 2000;83:474- 475. 18. Baker PS, Brandt RL, Boyajian G. Impression procedure for patients with severely limited mouth opening. J Prosthet Dent 2000;84:241-244. 247 European Journal of Dentistry