To determine and compare the position of neutral zone in relation to crest of mandibular alveolar ridge with different duration of edentulousness: A clinico-radiographic study

Indian Journal of Dentistry
Ajay JainSridevi Ugrappa

Abstract

The purpose of this study was to establish a relation between the crest of alveolar ridge and functionally obtained neutral zone and to determine the effect of duration of edentulousness on the location of neutral zone in relation to the crest of residual alveolar ridge. The study included three groups: Group I-15 subjects edentulous for 0 months to 2 years; Group 2-15 subjects edentulous for 2-5 years; and Group 3-15 subjects edentulous for more than 5 years. Neutral zone recording was performed for each subject and the buccolingual relationship of the crest of the mandibular alveolar ridge and position of the neutral zone was examined. The results were analyzed by the Kruskal-Wallis H test and the Chi-square test. The results suggested that the location of the neutral zone varies from individual to individual depending on their musculature and that there is a significant relation to the duration of edentulousness. As edentulousness increases, there is more lingual positioning of the neutral zone at the molar region of both sides of the arch. At the premolar region, there is no change in position of the neutral zone; it remains constant as resorption of the alveolar ridge is directly under the buttress. In the anterior region,...Continue Reading

References

Jul 1, 1970·The Journal of the American Dental Association·E N Starcke
Feb 14, 2006·The Journal of Prosthetic Dentistry·Victor E Beresin, Frank J Schiesser

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Citations

Feb 12, 2013·The Journal of Prosthetic Dentistry·Amit Porwal, Keiichi Sasaki

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BETA
X-ray

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Excel
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