Comparison of Dimensional Accuracy of Three Different Impression Materials Using Three Different Techniques for Implant Impressions: An In Vitro Study

Khan, Shabab Ahmed; Singh, Sunita; Neyaz, Nudrat; Jaiswal, Mishan Mohohar; Tanwar, Aditi Singh; Singh, Amitu

doi:10.5005/jp-journals-10024-3014

Cited by 12 publications

(13 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A study conducted by Williams et al explored the linear dimensional accuracy of three elastomeric impression materials (polyether, addition silicone, and condensation silicone) at various time intervals. The results indicated that polyether exhibited outstanding dimensional stability and the lowest degree of shrinkage [ 21 ]. This research demonstrates that the chemical disinfection method used in Group C had a significant impact on the dimensional stability of the polyether impression material at specific distances along the X- and Y-axes.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the effect of chemical disinfection and ultraviolet disinfection on the dimensional stability of polyether impression material: an in-vitro study

Joshi,

Madhav,

Saini

et al. 2024

BMC Oral Health

View full text Add to dashboard Cite

Background Various methods, chemical and physical, disinfect dental impressions. Common chemicals include 1% Sodium Hypochlorite and 2% glutaraldehyde, while UV radiation is a prevalent physical method. Few studies compare their effects on dimensional stability in polyether impressions. This study aims to assess such stability using different disinfection methods. Therefore, this study was planned to evaluate the dimensional stability of polyether impression material using different disinfection methods. Methods This in vitro study compared the effects of chemical disinfectants (1% Sodium Hypochlorite and 2% glutaraldehyde) and UV irradiation on the dimensional stability of polyether impression material. Groups A, B, C, and D, each with ten samples (N = 10), were studied. Group A was untreated (control). Group B was treated with 2% glutaraldehyde for 20 min, Group C with 1% Sodium Hypochlorite for 20 min, and Group D with UV rays for 20 min. A pilot milling machine drill was used to make four parallel holes labeled A, B, C, and D in the anterior and premolar regions from right to left. After sequential drilling, four implant analogs were positioned using a surveyor for accuracy. Ten open-tray polyether impressions were made and treated as described in the groups, followed by pouring the corresponding casts. Distortion values for each disinfection method were measured using a coordinate measuring machine capable of recording on the X- and Y-axes. Results A comprehensive analysis was conducted using the one-way ANOVA test for distinct groups labeled A, B, C, and D, revealing significant differences in the mean distances for X1, X2, X4, X5, and X6 among the groups, with p-values ranging from 0.001 to 0.000. However, no significant differences were observed in X3. Notably, mean distances for the Y variables exhibited substantial differences among the groups, emphasizing parameter variations, with p-values ranging from 0.000 to 0.033. The results compared the four groups using the one-way ANOVA test, revealing statistically significant distance differences for most X and Y variables, except for X3 and Y4. Similarly, post-hoc Tukey’s tests provided specific pairwise comparisons, underlining the distinctions between group C and the others in the mean and deviation distances for various variables on both the X- and Y-axes. Conclusions This study found that disinfection with 1% sodium hypochlorite or UV rays for 20 min maintained dimensional stability in polyether impressions.

show abstract

Section: Discussionmentioning

confidence: 99%

Evaluation of the effect of chemical disinfection and ultraviolet disinfection on the dimensional stability of polyether impression material: an in-vitro study

Joshi,

Madhav,

Saini

et al. 2024

BMC Oral Health

View full text Add to dashboard Cite

show abstract

“…Regarding the impression technique in the group (CG), primary impression was made using the one step putty and light body polyvinyl siloxane impression technique which was reported to be significantly more accurate than the two step one and the medium-body polyether impression material [ 8 , 9 ]. The adoption of the open top splinted impression coupled with intraoral impression coping resplinting may have prevented individual coping movement during the impression-making procedure and decreased the polymerization shrinkage of the splint material ending up with improved fit of the bar [ 16 , 31 ].…”

Section: Discussionmentioning

confidence: 99%

“…Khan et al also reported that such combination of impression materials was more accurate than the medium-body polyether impression material. Furthermore, the open top splinted impression technique was stated to be more accurate than the closed top and the non splinted ones [ 9 ]. However, a systematic review found no clear evidence that supports the accuracy of one impression technique rather than the others [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of different fabrication workflows on the passive fit of screw-retained bar splinting two interforaminal implants: a parallel blinded randomised clinical trial

Eldin,

Talaat,

Nawar

et al. 2024

BMC Oral Health

View full text Add to dashboard Cite

Background To clinically compare the effect of the conventional and the digital workflows on the passive fit of a screw retained bar splinting two inter-foraminal implants. Methods The current study was designed to be a parallel triple blinded randomised clinical trial. Thirty six completely edentulous patients were selected and simply randomized into two groups; conventional group (CG) and digital group (DG). The participants, investigator and outcome assessor were blinded. In the group (CG), the bar was constructed following a conventional workflow in which an open top splinted impression and a lost wax casting technology were used. However, in group (DG), a digital workflow including a digital impression and a digital bar milling technology was adopted. Passive fit of each bar was then evaluated clinically by applying the screw resistance test using the “flag” technique in the passive and non passive situations. The screw resistance test parameter was also calculated. Unpaired t-test was used for intergroup comparison. P-value < 0.05 was the statistical significance level. The study protocol was reviewed by the Research Ethics Committee in the author’s university (Rec IM051811). Registration of the clinical trial was made on clinical trials.gov ID NCT05770011. An informed consent was obtained from all participants. Results Non statistically significant difference was denoted between both groups in all situations. In the passive situation, the mean ± standard deviation values were 1789.8° ± 20.7 and1786.1° ± 30.7 for the groups (CG) and (DG) respectively. In the non passive situation, they were 1572.8° ± 54.2 and 1609.2° ± 96.9. Regarding the screw resistance test parameter, they were 217° ± 55.3 and 176° ± 98.8. Conclusion Conventional and digital fabrication workflows had clinically comparable effect on the passive fit of screw retained bar attachments supported by two dental implants.

show abstract

“…Many splinting techniques and splinting materials were studied in literature (12,13) . Auto polymerizing acrylic resins like Duralay and photopolymerizing resins like flowable composite were both used as splinting materials (2) .…”

Section: Introductionmentioning

confidence: 99%

Digital evaluation of a simplified technique for resin splinting used for multiunit implant restoration impressions: An in-vitro comparative study

ElDakkak

Neena

2022

Egyptian Dental Journal

View full text Add to dashboard Cite

Objectives: This study aims to simplify the conventional resin-on-floss splinting technique and study the precision of this modified multiimplant impression technique.Material and Methods: Twenty-four (n=24) impressions were done for one mandibular completely edentulous model with six implants placed at the canines, first premolars and first molars. Group I (n=12) used the sectional resin-on-floss splinting technique. Group II (n=12) used the simplified tray-resin splint technique. The reference model and casts were scanned. Obtained STLs were aligned. Virtual implants on each cast were compared to reference model measuring angular and positional deviations. All variables and were compared at p value <.05.Results: Group I had significantly lower differences in angular deviations in vertical and horizontal axes of each implant except the left first molar implant, vertically, and the left first premolar implant, horizontally. The overall angular deviations of all implants were significantly lower in group I at the vertical axis. Group I had significantly lower positional deviations in XY axes of each implant except the left first molar implant. Group I showed significantly lower values on the left canine and left first premolar implant in the Z axis. The overall positional deviations of each implant of group I were significantly lower on the left canine and right first molar implants. The overall positional deviations of all implants were significantly lower in group I at the XY axes.Conclusions: Conventional resin-on-floss technique showed less deviation values. Values of both techniques remained within the accepted level of clinical misfit values proposed in literature.

show abstract

Comparison of Dimensional Accuracy of Three Different Impression Materials Using Three Different Techniques for Implant Impressions: An In Vitro Study

Cited by 12 publications

References 29 publications

Evaluation of the effect of chemical disinfection and ultraviolet disinfection on the dimensional stability of polyether impression material: an in-vitro study

Evaluation of the effect of chemical disinfection and ultraviolet disinfection on the dimensional stability of polyether impression material: an in-vitro study

Effect of different fabrication workflows on the passive fit of screw-retained bar splinting two interforaminal implants: a parallel blinded randomised clinical trial

Digital evaluation of a simplified technique for resin splinting used for multiunit implant restoration impressions: An in-vitro comparative study

Contact Info

Product

Resources

About