A Systematic Review

Application of neutral zone impression technique in mandibular completely edentulous: a systematic review

Maharani K. Baso , Mohammad Dharmautama

Maharani K. Baso
Department of Prosthodontic, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia. Email: ildafdentist@gmail.com

Mohammad Dharmautama
Department of Prosthodontic, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia
Online First: January 07, 2019 | Cite this Article
Baso, M., Dharmautama, M. 2019. Application of neutral zone impression technique in mandibular completely edentulous: a systematic review. Journal of Dentomaxillofacial Science 0: 1-5. DOI:10.15562/jdmfs.v0i0.773

Objective: To identify scientific evidence relating to the application of neutral zone impression techniques for the manufacture of complete denture in patients with various conditions.

Methods: An initial search was conducted from PubMed database, Wiley Online Library and Google Scholar to evaluate article published in dental journals from January 2015 to December 2017 about application of neutral zone impression techniques in complete edentulous patients with various conditions. Manual search of published full-text articles and related reviews were performed afterwards. The initial results of this search was 297 articles, with only 13 studies met the inclusion criteria.

Results: The selected studies were based on inclusion criteria with 47 patients as subjects with related condition of neuromuscular disorders 3 articles, Residual Ridge Resorption (RRR) 8 articles and another condition 2 articles. There are 9 studies used  impression compound with green stick, 2 studies used tissue conditioner, 1 study used silicone rubber impression material and 1 study used alginat. The techniques used were swallowing and phonetic techniques in 8 articles, swallowing technique in 4 articles and phonetic techniques in 1 article.

Conclusion: The success of a prosthesis depends on the proper position of the artificial tooth in the neutral zone. A variety of conditions requiring a stable and retentive mandibular complete dentures require proper neutral zone impression. Swallowing and phonetic movement instructions during the impression procedure were most often performed to record the neutral zone. Various impression materials can be used, but most often was impression compound.


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