J Korean Acad Prosthodont.  2019 Apr;57(2):195-202. 10.4047/jkap.2019.57.2.195.

Complete denture made with closed-mouth impression technique on severely atrophied edentulous jaw

Affiliations
  • 1Department of Biomaterials & Prosthodontics, Kyung Hee University Dental School Hospital at Gangdong, Seoul, Republic of Korea. sbykmw@yahoo.co.kr

Abstract

At the department of prosthodontics, the elderly patients with severely atrophied alveolar ridge who have been wearing complete dentures for a long period frequently visit the clinic. In general, the open-mouth impression technique for manufacturing a mandibular complete denture to secure primary support on buccal shelf area has been prevalent. In addition, for securing retention and stability of mandibular denture, we should consider diagnosis, oral function, denture border, occlusal plane, teeth arrangement, and patient training, etc.. But in edentulous patients with severe alveolar bone atrophy, it may hardly secure retention and stability of mandibular complete denture. To promote these, some of clinicians are making an attempt manufacturing the mandibular complete dentures using closed-mouth impression technique based on several reports that compare various impression techniques including open-mouth and closed-mouth impression technique. This case report suggests closed-mouth impression technique may promote retention and stability of mandibular complete denture and compares between the two impression techniques clinically.

Keyword

Open-mouth impression technique; Closed-mouth impression technique; Complete denture; Functional impression; Retention; Stability

MeSH Terms

Aged
Alveolar Bone Loss
Alveolar Process
Dental Occlusion
Denture, Complete*
Dentures
Diagnosis, Oral
Humans
Jaw, Edentulous*
Prosthodontics
Tooth

Figure

  • Fig. 1 Radiograph of patient. (A) Panoramic view, (B) Temporomandibular joint (TMJ) panoramic view.

  • Fig. 2 Intraoral view. (A) Occlusal view of maxilla, (B) Right retromolar pad, (C) Frontal view, (D) Left retromolar pad, (E) Occlusal view of mandible.

  • Fig. 3 Border molding on the individual trays with open-mouth impression technique at the second visit. (A) After border molding with modeling compound, (B) Upper and lower final impression bodies with regular body polyvinylsiloxane impression material.

  • Fig. 4 Intraoral view at delivery of open-mouth impression technique denture. (A) Maxillary denture, (B) Frontal view, (C) Mandibular denture (retention insufficiency).

  • Fig. 5 View of diagnostic cast, occlusal rim (border within unmovable tissue).

  • Fig. 6 At the patient's second visit (closed-mouth impression technique). (A) Bite registration, (B) Wax denture, (C) Resin splint.

  • Fig. 7 At the patient's third visit (closed-mouth impression technique) (A), (B) Patient training of closed-mouth impression technique, (C) Final impression with closed-mouth impression technique.

  • Fig. 8 view at delivery of closed-mouth impression technique mandibular denture. (A) Occlusal view of maxilla, (B) Lateral view (right side), (C) Frontal view, (D) Lateral view (left side), (E) Occlusal view of mandible.

  • Fig. 9 Comparison of master model fabricated by two techniques. (A) Open-mouth impression technique - Right, (B) Closed-mouth impression technique - Right, (C) Closed-mouth impression technique - Left, (D) Open-mouth impression technique - Left.

  • Fig. 10 Comparison of mandibular dentures fabricated by two impression techniques. The left is open-mouth impression technique denture and the right is closed-mouth impression technique denture. (A) Open-mouth impression technique denture, (B) Closed-mouth impression technique denture.


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