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Fulltext A simplified suturing model for preclinical training

Kumaresan R, Pendayala S, Srinivasan B, Kondreddy K

Indian J Dent Res, 2014 Jul-Aug;25(4):541-3.

PMID: 25307925 DOI: 10.4103/0970-9290.142577

OBJECTIVES: The purpose of this paper is to develop a simple and cost-effective suturing training model.
MATERIALS AND METHODS: A simplified suturing model is developed for preclinical training purpose. The training model requires only three easily available materials, which include synthetic foam sponge, elastomeric impression material and putty impression material. Construction of this model requires only 15 min.
RESULTS: The training model thus developed resembles a realistic human tissue with a skin analog, deeper connective tissues and a bony base. This enables the students to practice various suturing technique at different tissue planes. Such practice helps the students to perform a live procedure in a more skilled and less traumatic way.
CONCLUSION: The easy availability and cost-effective nature of the materials, in concert with fast construction time, makes this suturing model appropriate when an affordable alternative is desired.

Matched MeSH terms: Dental Impression Materials

Managing Fibrous Maxillary Ridge: A Case Series of Impression Techniques

Yee A, Meei TI, Ling GC

Prim Dent J, 2023 Mar;12(1):51-56.

PMID: 36916614 DOI: 10.1177/20501684231153909

Fibrous ridges on the edentulous maxillary arch are commonly found in combination syndrome or due to ill-fitting dentures. Often, these cases are managed conservatively using modified impression techniques to achieve better support and peripheral seal without displacing the movable tissue. Many impression techniques were proposed and justified with their respective ideologies, but some may complicate both the clinical and laboratory procedures. In this report, two simplified techniques are demonstrated to make an impression of the maxillary arch with fibrous ridges. Laboratory steps in custom tray fabrication are also emphasised for a successful and predictable impression.

Matched MeSH terms: Dental Impression Materials

Application of Functional Impression Technique and Use of Silicone as Bulb for Maxillary Obturator

Rahman AM, Nizami MMUI, Jamayet NB, Husein A

J Coll Physicians Surg Pak, 2017 May;27(5):319-320.

PMID: 28599699 DOI: 2623

Matched MeSH terms: Dental Impression Materials/chemistry

Accuracy of a new elastomeric impression material for complete-arch dental implant impressions

Baig MR, Buzayan MM, Yunus N

J Investig Clin Dent, 2018 May;9(2):e12320.

PMID: 29349910 DOI: 10.1111/jicd.12320

AIM: The aim of the present study was to assess the accuracy of multi-unit dental implant casts obtained from two elastomeric impression materials, vinyl polyether silicone (VPES) and polyether (PE), and to test the effect of splinting of impression copings on the accuracy of implant casts.

METHODS: Forty direct impressions of a mandibular reference model fitted with six dental implants and multibase abutments were made using VPES and PE, and implant casts were poured (N = 20). The VPES and PE groups were split into four subgroups of five each, based on splinting type: (a) no splinting; (b) bite registration polyether; (c) bite registration addition silicone; and (d) autopolymerizing acrylic resin. The accuracy of implant-abutment replica positions was calculated on the experimental casts, in terms of interimplant distances in the x, y, and z-axes, using a coordinate measuring machine; values were compared with those measured on the reference model. Data were analyzed using non-parametrical Kruskal-Wallis and Mann-Whitney tests at α = .05.

RESULTS: The differences between the two impression materials, VPES and PE, regardless of splinting type, were not statistically significant (P>.05). Non-splinting and splinting groups were also not significantly different for both PE and VPES (P>.05).

CONCLUSIONS: The accuracy of VPES impression material seemed comparable with PE for multi-implant abutment-level impressions. Splinting had no effect on the accuracy of implant impressions.

Matched MeSH terms: Dental Impression Materials/chemistry*

A practical three visit complete denture system

Ling BC

Ann R Australas Coll Dent Surg, 2000 Oct;15:66-8.

PMID: 11709981

Standard prosthodontic procedures require five visits to construct a set of complete maxillary and mandibular dentures. Various attempts have been made to reduce these procedures to four or three appointments. However, most of these techniques require the use of visible light polymerized resin as the final denture base materials. Visible light-cured resin materials have inferior physical properties and biocompatibility problems as compared with heat cured polymethylmethacrylate. This paper describes a system of complete denture construction which requires three clinical appointments instead of the usual five visits. This system is made possible by using the VLC base/tray material as the preliminary impression material as well as the application of a new biometric wax occlusion rim. It retains the use of polymethylmethacrylate as the denture base material. This system also utilizes all the procedures used in the conventional five appointment system of complete denture construction.

Matched MeSH terms: Dental Impression Materials/chemistry

A three-visit, complete-denture technique utilizing visible light-cured resin for tray and base plate construction

Ling BC

Quintessence Int, 2004 Apr;35(4):294-8.

PMID: 15119715

This article describes a technique of constructing a set of maxillary and mandibular complete dentures in three visits instead of the usual five clinical appointments. This system of complete-denture construction is made possible because of the combined use of visible light-cured material as an impression tray and record base material, as well as the use of new biometric wax occlusion rims. Unlike some earlier techniques that use light-cured resin composites as the denture base materials, this method retains the use of heat-cured polymethylmethacrylate as the denture base material.

Matched MeSH terms: Dental Impression Materials/chemistry

Properties of the tray adhesive of an addition polymerizing silicone to impression tray materials

Sulong MZ, Setchell DJ

J Prosthet Dent, 1991 Dec;66(6):743-7.

PMID: 1805022

Adhesive bond strength studies for the tray adhesive of an addition vinyl polysiloxane (President) impression material were conducted with an acrylic resin, chromium-plated brass, and plastic trays. Tensile and shear stress studies were performed on the Instron Universal testing machine. Acrylic resin specimens roughened with 80-grit silicon carbide paper exhibited appreciably higher bond strengths compared with different types of tray material and methods of surface preparation.

Matched MeSH terms: Dental Impression Materials/chemistry*

Contour analysis of an implant--soft tissue interface

Chai WL, Moharamzadeh K, van Noort R, Emanuelsson L, Palmquist A, Brook IM

J Periodontal Res, 2013 Oct;48(5):663-70.

PMID: 23442017 DOI: 10.1111/jre.12062

Studies of peri-implant soft tissue on in vivo models are commonly based on histological sections prepared using undecalcified or 'fracture' techniques. These techniques require the cutting or removal of implant during the specimen preparation process. The aim of this study is to explore a new impression technique that does not require any cutting or removal of implant for contour analysis of soft tissue around four types of titanium (Ti) surface roughness using an in vitro three-dimensional oral mucosal model (3D OMM).

Matched MeSH terms: Dental Impression Materials/chemistry

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