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South African Dental Journal

On-line version ISSN 0375-1562
Print version ISSN 0011-8516


GEERTS, G  and  KHAN, S. Comparing patient-based outcomes related to neutral zone and conventional mandibular dentures: A systematic review. S. Afr. dent. j. [online]. 2018, vol.73, n.4, pp.284-289. ISSN 0375-1562.

INTRODUCTION: neutral zone mandibular dentures are considered to be superior to conventional complete dentures. AIM: To synthetize evidence regarding patient-based outcomes of treatment with complete mandibular dentures following static or dynamic methods of establishing denture shape. OBJECTIVE: To answer the question: "In edentulous patients, what is the effect of neutral zone dentures on oral health-related quality of life and preference as compared with conventional dentures?" METHODS: Medline, Wiley, Cochrane Central Register of Controlled Trials, Proquest, Elsevier, Trip and Science Direct databases were searched for clinical studies, using a specific search strategy. RESULTS: From a total of 103 records, 9 studies (participants n=270) were included in the review, based on specific selection criteria. Reports on oral health-related quality of life and preference produced conflicting results. Most patients reported improvement in retention, stability, comfort, chewing, speech with fewer recall visits for neutral zone dentures. High level of heterogeneity in study design, patient-based outcomes, instruments and statistical analysis was encountered, preventing meta-analysis. Quality of most studies was low, with small sample sizes (range: n=5-128), short follow-up periods (5 days-2 months), and high level of selection, performance and detection bias. CONCLUSION: Results should be interpreted within the context of little and low-level scientific evidence.

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