Comparative evaluation of the amount of gingival displacement produced by three different gingival retraction systems: An in vivostudy (original) (raw)
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A comparative evaluation of the efficacy of two gingival retraction systems: an in vivo study
European Journal of Molecular & Clinical Medicine,, 2020
Aim: To compare and evaluate the efficacy of two gingival retraction systems. Materials and method: This in vivo experimental study was carried out on 20 patients in need of tooth supported crown and bridge. Two different gingival retraction systems were used to evaluate the amount of gingival displacement. Patients were marked as A, B, C and so on and for each patient three impressions were made and named as I, II, III. Group I-Control (baseline impression), Group II-Impression with knitted retraction cord #00 size ultrapak group, Group III-Impression with 3M ESPE retraction capsule (in millimeter). The abutment tooth was prepared for full coverage crown with a subgingival finish line. Baseline impression was made on the first day of tooth preparation without retraction. On day 8 and day 15 impressions were made with vinyl polysiloxane regular body after displacement with anyone of 2 displacement agents. A total of three impressions were made for each abutment tooth. Impressions were poured immediately with die stone. A 3 mm thick buccolingual slice was obtained from the cast of the prepared tooth region with the die cutter. The gingival retraction was measured from the tooth to the crest of gingiva in a horizontal plane. These samples were viewed under a Profile projector (MEERA METZER PROFILE PROJECTOR MODEL-MET7-B01RD) at 10x magnification and gingival retraction was measured from the tooth surface to the crest of gingival. Datas obtained were then send for statistical analysis. Results: There was a highest mean value for group III (3M ESPE retraction capsule)-1.1879±0.2490 mmin comparison to group I, group II. On performing the student independent t test, it was found that P is <0.05 that is statistically significant. Conclusion: Impression made after retraction of gingiva with 3M ESPE retraction capsule was effective in respect to gingival displacement.
International journal of health sciences
Aim: To compare and evaluate the gingival displacement produced by three different gingival retraction materials. Materials and Methods: A study was conducted to evaluate the gingival displacement produced by three gingival retraction materials. 12 subjects were selected for the study. T-stat retraction paste system (Nexobio co.Ltd,Korea), 3M ESPE Retraction Paste (3M Deutschland GmbH, Germany), Roeko Stay- put retraction cord (Coltene Whaledent Pvt. Ltd.) were used in the study. Results: Out of the three materials used, lateral displacement was maximum with the Stay-put retraction cord followed by 3M retraction paste and least by T-Stat retraction paste. All the materials produced acceptable amount of vertical gingival retraction. When compared Stay-put retraction cord was found to be most effective among the three materials. On comparison of the cordless retraction materials, it was found that the material which was more viscous in consistency (3M retraction paste) was able to pr...
Asian Journal of Pharmaceutical and Clinical Research, 2018
Objective: The purpose of this in vivo study was to compare and evaluate the clinical efficacy of two gingival retraction systems; Ultrapak and Traxodent, on the basis of the amount of gingival retraction achieved in vertical and horizontal direction and their hemorrhage control. Methods: A total of 60 subjects were selected requiring fixed prosthesis. The two gingival retraction systems were used on the prepared abutments randomly. The vertical gingival retraction was measured before and after retraction using flexible measuring strip with 0.5 mm grading. The horizontal retraction was measured on the casts poured in polysilicone impressions made before the retraction and after retraction. Results: Statistically significant difference (p<0.05) was found between the amount of the retraction (vertical and horizontal) achieved by Ultrapak as compared to Traxodent. However, in achieving hemostasis Traxodent showed better efficiency than Ultrapak (p<0.05). Conclusion: The mean retraction width and depth achieved with retraction cord (Ultrapak) was significantly greater when compared with retraction paste. Although retraction paste (Traxodent) showed bleeding index significantly less when compared to that of retraction cord (Ultrapak).
An in-vivo study to evaluate the clinical efficacy of different gingival retraction systems
International Journal of Advance Research, Ideas and Innovations in Technology, 2019
Background: Meticulous impression of the prepared teeth is of extreme importance for successful fixed prosthetic restorations. Gingival retraction allows access to finish lines and to create space for the impression material to record prepared and unprepared tooth structure. Dentists should carefully consider the various materials and methods of gingival retraction in light of the potential risks involved. Aim: The aim of this study was to assess and compare the amount of displacement in terms of lateral displacement by the Expasyl and Magic FoamCord retraction systems. Materials and methods: Study was conducted on the unprepared right and left maxillary central incisors for 10 subjects. Subjects were selected based on certain selection criteria. The pre-displacement and post-displacement impressions were made in a custom tray with monophase addition silicone material using a single mix-one step impression technique. Final cast of maxillary central incisors was sectioned longitudinally into two equal halves. The sectioned halves were oriented on mounting jig using a spirit level and assessed under a traveling microscope. The measurements were made from the crest of the gingival margin to the mid-buccal surface of the tooth. The amount of gingival displacement in each group was calculated by subtracting the pre-displacement values from post-displacement values. From the observations obtained statistical analysis was performed using paired't' and unpaired't' test. Results: Group I produced more amount of lateral displacement than Group II. However, the amount of gingival displacement between Group I and Group II showed a statistically significant difference. Conclusion: Expasyl pastes retraction system showed more lateral displacement of gingiva compared to Magic Foam Cord system.
European Journal of Prosthodontics, 2014
Aim: Gingival deflection techniques can be classified as mechanical, mechanochemical, surgical, or any combination. Comparative evaluations of gingival retraction systems are done rarely mainly because there is no consensus on the evaluation criteria. Therefore, this study aimed to evaluate the efficacy of three different gingival retraction systems, i.e., Magic Foam Cord, expasyl paste, and aluminium chloride-impregnated retraction cord. Materials and Methods: Following impressions, obtained casts were measured for gingival sulcus opening width under optical microscope (with imaging system software). The presence of bleeding after removal of material, ease of procedure, and patient's comfort were also evaluated. The data collected were tabulated and subjected to statistical analysis. Results and Conclusion: Evaluation of the clinical efficacy is relatively difficult because of the lack of appropriate measuring tool. In addition, choice of appropriate gingival retraction system is still a dilemma for the operator. Moreover, a particular clinical situation may indicate the specific technique.
Comparative Review of Gingival Retraction Agents
Acta medica medianae, 2012
In order to obtain an adequate impression of demarcation line area of a prepared tooth located in or below the gingival edge it is necessary to perform the dilatation and drying of the gingival sulcus using retraction cord impregnated with adequate retraction agents. The aim of the study was to carry out comparative analysis of advantages and disadvantages of commercially available gingival retraction agents. Commercial retraction agents include astringents (metal salts) and vasoconstrictors on the basis of epinephrine. Further research should be aimed at examining the possibility of using sympathomimetic vasoconstrictors (tetrahydrosolin and oxymetasolin) for gingival retraction. Acta Medica Medianae 2012; 51(1):81-84.
2016
Background: Making an impression for fixed prosthesis require the gingival tissue to be displaced to expose the finish lines on the prepared teeth. Therefore, effectively managing the gingiva prior to making an impression is a critical preliminary step in the process of fabricating restorations. Because of enormous variability of clinical cases, it is not possible to use a single method or impression material for fixed prosthesis. Aims: The aim of this study was to evaluate and compare the amount of lateral displacement by laser and magicfoam retraction systems. Methods and Material: Study was conducted on prepared right or left maxillary central incisor for 30 subjects. The pre and post displacement impressions were made with addition silicone material using two stage double mix technique. Final cast were sectioned longitudinally into equal halves. The sectioned halves were assessed under stereomicroscope. The measurements were made from crest of gingival margin to midbuccal surfac...
SciDoc Publishers, 2020
To access the prevalence of the gingival biotype as classified by Anon Ross and Seibert and Lindhe classification and to evaluate its correlations with the mode of mechanical retraction employed. 200 case sheets of patients who visited SDC with a requirement of fabrication of a fixed dental prosthesis were obtained from DIAS and evaluated. The gingival biotype of the patients were assessed and classified under the Anon Ross and Siebert and Lindhe classification and the mode of retraction used for the case was also noted. Results obtained were tabulated using an excel sheet. Descriptive statistics was performed to assess the prevalence and correlation was assessed using chi square test.The prevalence of “ Scalloped and thin “ according to Anon and Ross and “ thin “ according to Seibert and Lindhe were 55.5% and 54.1% respectively. Similarly for “flat and thick” and “thick” the prevalence was 44% and 45% of total sample size. There is a statistically significant association between the mechanical retraction method used in both the gingival biotypes. Gingival health is of paramount importance. The mechanical retraction method used should be in accordance with the gingival biotypes to prevent unwarranted trauma
A literature review on techniques of gingival retraction
IP Annals of Prosthodontics and Restorative Dentistry
For the better out come of the fixed dental prosthesis in terms of periodontal health, in terms of aesthetics and longevity of the prosthesis, a good and proper retraction of the gingival tissue is very much required. For the proper placement of the fixed dental prosthesis over the prepared tooth requires close contact with the adjacent tissue i.e. gingiva, so for the proper and placement of the prosthesis in the close proximity requires adequate isolation and retraction of the soft tissue around the prepared tooth. For the procedure of gingival retraction various methods and different materials are available.
Progresses in gingival retraction materials: A review
International Journal of Applied Dental Sciences, 2021
The fundamental point of gingival retraction is to uproot the gingival tissues at the margins reversibly in order to allow the impression material to capture the marginal detail. Different isolation methods are put forward in practice which not as it were given sufficient vision and perfect working environment, but moreover keep up hemostasis to certain degree. The reason of this article is to audit the ancient & most recent headways within the field of tissue retraction.