Cameo surface recording in complete denture fabrication using transcutaneous electrical nerve stimulation: A clinical report

Bioelectric Nerve Stimulation for Final Impression and Cameo Surface Recording for Completely Edentulous Patients: A Report of Two Cases

Attaining the appropriate relation of the denture base with the tissues for optimum retention and support poses various challenges. Retention and support of a prosthesis depend on capturing mucosa and limiting structures in undistorted form. The impression in the geriatric population and patients with maxillary and mandibular defects poses a challenge for prosthodontists. An alternate impression-making technique, including transcutaneous electric nerve stimulation (TENS), can be viable for these clinical cases. In the TENS technique, electrodes are placed on the region of the posterior triangle of the neck and the pre-auricular region simultaneously on both sides to instigate muscle contractions in the target area. An impression is obtained in physiological harmony with surrounding musculature after applying TENS. TENS can induce muscle contractions when applied <10 Hz, while >20 Hz can cause paraesthesia. This case report presents two cases rehabilitated with complete dentures in which ultra-low frequency (ULF) TENS (<4 Hz) has been used for impression making.

The effect of bioelectric and manual impressions on quality of complete dentures and quality of life: A cross over pilot study

Purpose

To compare the quality of complete dentures and quality of life of participants rehabilitated by using TENS (Transcutaneous electric nerve stimulation) facilitated impression making with manual impressions.

Material and methods

Ten completely edentulous participants were enrolled in the crossover, pilot study. Participants were randomized in 2 groups. Five participants in each group were rehabilitated by dentures fabricated with TENS facilitated definitive impression technique (group T) and conventional impression technique (group C). In group T, Bioelectric border molding was done for the participants, that uses electric stimulation of the nerves supplying the muscles. In group C, incremental border molding using modeling plastic impression compound was carried out. Participants in each group used the dentures for 3 months. After 3 months, OHIP-EDENT questionnaire responses were obtained from the participants to observe the oral health related quality of life. A dental specialist recorded denture quality by Kapur scoring criteria. After one month wash period, the treatment was swapped between the groups. OHIP-EDENT scores and Kapur score were recorded for the alternate dentures after 3 months of use. Descriptive analysis was followed by Mann Whitney test to compare the overall scores between group T and group C for OHIP-EDENT, the scores for individual domains of OHIP-EDENT, and Kapur score for denture evaluation (α = 0.05).

Results

The overall OHIP-EDENT scores within each domain were less in group T when compared with the scores in group C and Kapur score for group T was more than group C. The difference was statistically significant i.e. P = 0.002 & 0.003 respectively.

Conclusions

Less OHIP-EDENT scores in group T imply better perception of quality of life of individuals due to better performance of stomatognathic system. The higher Kapur scores in group T signifies better quality of dentures when TENS was used for definitive impression making.

Effectiveness of denture space recording method in the prosthetic treatment of edentulous patients

PURPOSE

To present a clinical rationale for the effectiveness of denture space recording methods for the prosthetic treatment of edentulous patients through a review of the literature.

STUDY SELECTION

A total of 3167 studies were extracted from a search of four terms, namely denture space, neutral zone technique, flange technique, and piezography using PubMed and J-STAGE databases. A total of 57 documents that matched the inclusion and exclusion criteria were selected.

RESULTS

From the extracted articles, the clinical application of denture space recording methods was found to be effective in edentulous patients with severe ridge resorption. The relationship between the labiolingual and buccolingual pressure in patients with neuromuscular problems or with mandibular or lingual defects differs from those without it, so a stable prosthesis ca n be easily fabricated by locating the neutral zone using denture space recording methods.

CONCLUSIONS

The literature on denture space recording methods suggests that its application on challenging cases of edentulous patients is useful in providing prostheses with improved retention and stability.