Evaluation of lateral throat form-an in vivo study

  • Authors

    • Isha Rastogi Mayo institute of medical sciences
    2014-08-09
    https://doi.org/10.14419/ijdr.v2i2.3119

  • Abstract

    Introduction: Lateral throat form is an area situated at the distal end of the alveololingual sulcus. Its synonyms are distolingual vestibule and retromylohyoid fossa. The extension of denture into this area can resist horizontal forces, increase border sealing, prevent the tongue from returning to its polished surface, act as a displacing lever on the denture border and contribute to neuromuscular control.

    Purpose: To evaluate the relative proportion of the lateral throat forms in 74 patients aged between 18-45 years from Lucknow(Eastern UP).A designed instrument was used to confirm LTF.

    Method: LTF was intraorally evaluated by finger method and instrument.Then the mandibular impressions were made and casts obtained for measurements in this study.

    Results: The data obtained was subjected to statistical analysis.It was seen that majority of  the lateral throat forms among the patients were class I, followed by class II and class III were rare.Extension of denture border in the distolingual region (vertically and horizontally) was found to be more in class I lateral throat form compared to class II and least for class III.Significant differences were observed between the vertical dimension in patients’ mouth to that of their diagnostic casts.Vertical and horizontal dimensions correspond to each other.The lateral throat form needs to be measured, to select proper stock tray for primary impression.The custom tray has to be adjusted and extended properly to record lateral throat form with more accuracy.

    Conclusion: It is concluded that lateral throat form has to be properly recorded for mandibular denture stability and for its successful fabrication.

     

    Keywords: Lateral Throat Form (LTF), Dentilingual Vestibule, Retromylohyoid Fossa, Alveolingual Sulcus, Lingual Border Anatomy.

  • References

    1. Levin B. Impressions for Complete Dentures. Chicago: Quintessence, 1984:51-55
    2. Pei-Sheng Huang,Tsau-Mau Chou, Hong-Po Chang, Jen-Hao Chen, Huey-Er Lee, Hong-Sen Chen, Dorsey J. Moore. The Proportion of 3 Classes of Lateral Throat Form. International Journal of Prosthodontics 2007; 20: 640-42.
    3. P. W. Smith, R. Richmond, and J. F. McCord. The design and use of special trays in prosthodontics: guidelines to improve clinical effectiveness. British Dental Journal 1999; 187: (8), 423–426.
    4. Sharry Complete Denture, 1974; 200.Mc Graw Hill.
    5. W.R.Laney. Diagnosis and treatment in Prosthodontics, 1983: 63-64. Philadelphia, PA, Lea & Febiger.
    6. Ajay Gupta, Himanshu. Role of Coronomaxillary Space and Lateral Throat Form in Denture Retention. BFUDJ 2010; 1: (2),25-8
    7. D.E.Jennings. Treatment of the mandibular compromised ridge: A Literature review. JPD 1989; 61:575-9.
    8. Swenson’s complete dentures 5th edition, 1964,93-95 C.V.Mosby Co
    9. H.A. Collett. Complete denture impressions. JPD196;15(4), 603-614
    10. Bernard D.Lynn. The significance of anatomic landmarks in complete denture service. JPD 1964; 14 (3):456-459.
    11. Klein E.I in JPD 1957; 7:579.
    12. W.J.Tuckfield. Review of impression techniques in full denture prosthesis. Int Dent J. 1950; 1:112-130.
    13. J.A. Hobkirk. The management of gross alveolar resorption. JPD 1973; 29 (4): 397-404.
    14. Galen B.Schneider, William V. Synan. Use of a single implant to retain a mandibular complete overdenture. Special care in Dentistry, 2011; 31(4):138-143. http://dx.doi.org/10.1111/j.1754-4505.2011.00196.x.
    15. T.E. Jacobson, A. J. Krol. A contemporary review of the factors involved in complete dentures. Part II: Stability. JPD 1983; 49(1): 165-72.
    16. T.E. Jacobson, A.J. Krol. A contemporary review of the factors involved in complete dentures. Part I: Retention. JPD 1983; 49(1), 5-15.
    17. Arie Shifman. Recording the retromylohyoid space in preliminary irreversible hydrocolloid impressions. JPD 1984; 51(3), 434.
    18. Parajuli PK, Shetty TB, Shenoy VK, Rodrigues SJ. Comparative evaluation of the lateral throat form and the border extension of mandibular complete denture in the distolingual region among the south coastal Karnataka population: An in vivo study, J. Nepal Dent. Assoc. 2010; 11(2): 121-5.
    19. Corwin R.Wright. Evaluation of the factors necessary to develop stability in mandibular Dentures. JPD May-June 1966; 16(3):414-30.
    20. Levin B.Current concepts of lingual flange design.JPD 1981; 45:242-252.
    21. Sadhvi K.V., Chandrasekharan Nair K., Jayakar Shetty. Research Lateral Throat Form Design of a Measuring Instrument. KDJ 2010; 33 (1), 18-19.

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  • How to Cite

    Rastogi, I. (2014). Evaluation of lateral throat form-an in vivo study. International Journal of Dental Research, 2(2), 40-44. https://doi.org/10.14419/ijdr.v2i2.3119

    Received date: 2014-07-04

    Accepted date: 2014-08-02

    Published date: 2014-08-09