12.05.2015
You must have JavaScript enabled in your browser to utilize the functionality of this website. El-Sheikh1, Ayman Ellakwa21Department of Prosthetic Dentistry, Faculty of Dentistry, Tanta University, Tanta, Egypt2Department of Biomaterials, Faculty of Dentistry, The University of Sydney, Sydney, Australia Correspondence Dr.
El-Sheikh, Department of Prosthetic Dentistry, Faculty of Dentistry, Tanta University, Tanta, Egypt. Debonding of acrylic teeth from the denture base remains a major problem in prosthodontic practice. A 45-year-old man with periodontally involved lower central incisors was treated with extraction of these two teeth and replacement of missing with an acrylic resin interim denture. With this technique, the patient expressed great satisfaction with the interim denture from the retention point of view. Due to debonding of acrylic teeth from the denture base, the use of reinforcing materials, such as fiber reinforced composite, is indicated in cases of interim removable partial dentures replacing missing anterior teeth. Temporary or provisional acrylic partial denture (APD) is one option for replacing missing teeth. Dentists are faced with the demand for replacing missing teeth from patients with limited financial resources; therefore, the replacement of missing teeth with an APD is a common occurrence.
The failure of the bond between acrylic resin teeth and denture base material remains a considerable problem. Teeth debonding from dentures can be frustrating to the patients as well as the dentist. Debonding of acrylic teeth from the denture base remains a major problem in prosthodontic practice.


Different materials were used for reinforcing acrylic resin denture base: Metal wires, polyethylene and glass fibers.
Glass fiber reinforcement has shown a better reinforcement efficiency than metal wires or polyethylene fibers.[6-9] Most of the glass fiber reinforcements in dentistry have cross-linked polymers in matrix and those need light polymerization for hardening. Whereas denture base acrylic chemistry is based on linear polymers, and those are auto or heat polymerized. There is only one study where glass fiber with light curing matrix has been used with acrylic resin denture base.[8] Case Report A 45-year-old man was referred to the Department of Prosthetic Dentistry, Faculty of Dentistry, Tanta University (Tanta, Egypt) for treatment. Patient’s chief complaint was the mobility of the two lower central incisors.
Oral examination showed that these two teeth were periodontally involved [Figure 1] and have Grade III mobility.
The treatment plan was to extract these two mobile teeth and replace them with a glass fiber-reinforced composite interim acrylic resin denture as a provisional measure.
The impressions were poured using dental stone (TecStone, Pearson Dental Supply Company, CA, USA). The laboratory technician was asked to fabricate the heat-cured acrylic resin denture base (Lucitone 199, DENTSPLY Prosthetics) with the clasps according to the design drawn on the laboratory sheet but without removing the suspected teeth for extraction [Figure 2]. Enough space for the fiber and teeth were grinded in the denture base [Figure 5]. Small channels were drilled inside the two denture teeth, and fibers were placed into the channels.
Conventional finishing and polishing of the denture base and teeth were carried out.


The patient was seen the next day of delivery for any potential corrections or modifications.
During the follow-up period, there had been no subjective signs of teeth debonding or discoloration, and the patient expressed a great satisfaction with the interim denture from the retention point of view.
The first way gives more strength against the fracture in this particular area.
If fiber reinforcement is used to prevent debonding between denture teeth and denture base, fibers should be placed into the denture teeth. In this report, small channels were drilled inside the two denture teeth, and fibers were placed into the channels. Reasons for choosing this type of fiber were the easiness of use, and no wetting of the fibers was needed.
The fibers were also easy to harden by light cure into the right shape before placement. This allowed proper placement and positioning of fibers without any displacement after teeth addition. With this technique, the patient expressed great satisfaction with the interim denture from the retention point of view.



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