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REVIEW ARTICLE
Year : 2016  |  Volume : 16  |  Issue : 3  |  Page : 229-233

Preliminary impression techniques for microstomia patients


1 Department of Prosthodontics, Amrita Vishwa Vidyapeetham, Amrita School of Dentistry, Kochi, Kerala, India
2 Department of Prosthodontics and Implantology, AB Shetty Memorial Institute of Dental Sciences, Mangalore, Karnataka, India
3 Department of Prosthodontics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
4 Department of Periodontics, Amrita Vishwa Vidyapeetham, Amrita School of Dentistry, Kochi, Kerala, India

Correspondence Address:
K Aswini Kumar
Department of Prosthodontics, Amrita Vishwa Vidyapeetham, Amrita School of Dentistry, Cochin, Kerala
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-4052.186400

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The Prosthetic rehabilitation of microstomia patients presents difficulties at all the stages. The difficulty starts with the preliminary impression making. This is due to the tongue rigidity and the decreased oral opening. A maximum oral opening which is smaller than the size of the tray can make prosthetic treatment challenging. Due to the restricted mouth opening, insertion and removal of the impression trays is extremely cumbersome and various modifications of the trays have been used in the past. Among these are the flexible trays and the sectional trays used with different modes of reassembling the segments extra orally after the impression is made. This article reviews the literature published from 1971 to 2015 concerning preliminary impression techniques used in making impressions for patients with microstomia based on various tray designs. An electronic search was performed across three databases (PubMed, Science Direct and Google Scolar) for relevant citations. The keywords/combinations used for the search were microstomia, limited/constricted/restricted mouth opening/oral access, trismus, sectional trays, impressions and prosthetic/prosthodontic rehabilitation. The search was limited to papers written in English which resulted in a total of 45 related articles of which 17 articles were included for discussion of this review.


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