Comparison of time-dependent two-dimensional and three-dimensional stability with micro-computerized tomography and wettability of three impression materials

Karaaslan, G; Malkoc, MA; Yildirim, Guler; Malkoç, Sıddık

doi:10.4103/njcp.njcp_314_17

Cited by 5 publications

(1 citation statement)

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“…They have the advantages of good reproducibility and tear resistance but have a series of drawbacks, including the fact that they are not easily accepted by the patient; therefore, they are not commonly utilized. On the other hand, polyether and silicones have a series of advantages, such as good elasticity, reproducibility of details, and good dimensional stability; these features make them more preferable to dentists [15][16][17][18][19][20]. Therefore, with their wide spectrum of indications, silicones and polyether are the most utilized impression materials in dental practice [21].…”

Section: Introductionmentioning

confidence: 99%

Conventional Dental Impressions vs. Impressions Reinforced with Rigid Mouthguards

Novac,

Tudor,

Pop

et al. 2024

Polymers

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The impression materials utilized today in dental medicine offer a good reproducibility and are easily accepted by patients. However, because they are polymer-based, they have issues regarding their dimensional stability. In this respect, the present work proposes a new type of dental impression, which is reinforced with rigid mouthguards. The aim of the study is to test the performances of such new impressions by comparing them to conventional ones—from this critical point of view, of the dimensional stability. Three types of polymeric materials were considered for both types of impressions: alginate, condensation silicone, and addition silicone. In order to obtain the new type of impressions, a manufacturing technique was developed, comprising the following phases: (i) conventional impressions were made; (ii) a plaster model was duplicated, and 15 rigid mouthguards were obtained; (iii) they were inserted in the impression technique, with each mouthguard positioned on the cast before the high-consistency material was inserted in the tray and the practitioner took the impression; (iv) the mouthguard remained in the tray and the low-viscosity material was inserted over the mouthguard; (v) the impression was positioned on the model, and after the material hardened, the mouthguard-reinforced impression was analyzed. In the evaluation of the dimensional stability, rigorous statistical analysis was essential to discern the performance differences between conventional and mouthguard-reinforced dental impressions. Statistical analyses employed non-parametric Mann–Whitney U tests because of the non-normal distribution of the data. They indicated a statistically significant improvement in the dimensional stability of addition silicone impressions when reinforced with mouthguards (p < 0.05), showcasing superior performance over conventional methods. Conversely, alginate and condensation silicone reinforced impressions did not exhibit the same level of stability improvement, suggesting the need for further optimization of these materials. In conclusion, from the three considered elastomers, addition silicone was found to be the prime candidate for high-precision dental impressions, with the potential to improve their quality from conventional impressions by utilizing the proposed reinforcing technique.

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Section: Introductionmentioning

confidence: 99%

Conventional Dental Impressions vs. Impressions Reinforced with Rigid Mouthguards

Novac,

Tudor,

Pop

et al. 2024

Polymers

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3D cone-beam C.T. imaging used to determine the effect of disinfection protocols on the dimensional stability of full arch impressions

Hsu

Balhaddad

García

et al. 2021

The Saudi Dental Journal

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Radiographic and histological assessment of root resorption associated with conventional and mini-screw assisted rapid palatal expansion: a systematic review

Arqub

Gandhi

Iverson

et al. 2022

European Journal of Orthodontics

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Background and objectives The aim of this systematic review and meta-analysis was to evaluate root resorption after maxillary expansion with conventional rapid palatal expansion (RPE) and mini-screw assisted rapid palatal expansion appliances (MARPE) using 2D and 3D radiographic methods and histologic methods of measuring root resorption. Search methods and selection criteria A search of PubMed/MEDLINE, Scopus, Cochrane Central Register of Controlled Trials, CINAHL, Web of Science, Global Index Medicus, Dissertations & Theses Global, ClinicalTrials.gov registry, ISRCTN Registry, National Research Register, OpenGrey, and the Trip Database was performed. The studies that had analysed root resorption after RPE or MARPE were selected for the systematic review. Data collection and analysis The database research, elimination of duplicate studies, data extraction, and risk of bias were performed by the authors independently and in duplication. This systematic review included prospective studies to evaluate root resorption following RPE after tooth-borne (TB), tooth-tissue borne (TTB), bone-borne (BB), and tooth-bone borne (TBB) expansion appliances. Results A total of 13 prospective trials (six randomized clinical trials and seven non-randomized prospective clinical trials) were identified for inclusion in this systematic review. Histological studies revealed that most teeth experience root resorption on the buccal surfaces after maxillary expansion. MARPE designs with BB and TBB expansion appliances were found to lead to reduced volumetric root resorption than conventional RPE using micro-computed tomography. However, one study using cone beam computed tomography showed no difference in the root resorption with MARPE and RPE designs. Conclusions and implications Maxillary expansion with RPE can lead to root resorption of maxillary posterior teeth. Root resorption occurs more frequently on buccal surfaces on maxillary posterior teeth. Limited evidence suggests that MARPE may lead to reduced root resorption than RPE. Registration This systematic review was conducted following the Cochrane handbook for systematic reviews and interventions and reported according to the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The protocol was registered at PROSPERO database (https://www.crd.york.ac.uk/prospero/; registration number: PROSPERO CRD42021271181).

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Comparison of time-dependent two-dimensional and three-dimensional stability with micro-computerized tomography and wettability of three impression materials

Cited by 5 publications

References 0 publications

Conventional Dental Impressions vs. Impressions Reinforced with Rigid Mouthguards

Conventional Dental Impressions vs. Impressions Reinforced with Rigid Mouthguards

3D cone-beam C.T. imaging used to determine the effect of disinfection protocols on the dimensional stability of full arch impressions

Radiographic and histological assessment of root resorption associated with conventional and mini-screw assisted rapid palatal expansion: a systematic review

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