Dimensional stability of alginate impressiion material over a four hours time frame

Shaba, OP; Adegbulugbe, IC; Oderinu, O H

doi:10.4314/nqjhm.v17i1.12531

Cited by 10 publications

(7 citation statements)

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“…Nowadays, t he literature results ca n be described as controversial. While some authors have defended immediate pouring [15,25], storage for 10 minutes [26] or even 4 h when stored in medium humidity and 2 h in medium dryness [19], others have demonstrated that some alginate can be poured later [7,23]. Our results demonstrated that Jeltrate Plus could be disinfected and poured up to 24 h after taking the impression without significant dimensional changes.…”

Section: Discussionmentioning

confidence: 62%

Linear dimensional stability of irreversible hydrocolloids with and without disinfection at different storage times

Pinheiro¹,

Ayala²,

Pomini³

et al. 2019

RSBO

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Irreversible hydrocolloids have been used in dental practice for decades and their pouring time has been suggested to be as short as possible; however the latest generation of alginates exhibit better properties, which could influence the fidelity of the casts. Objective: To evaluate the linear dimensional stability of stone casts obtained using two irreversible hydrocolloid brands (Cavex ColorChange and Jeltrate) after disinfection. Material and methods: Samples were divided into 16 groups (n = 10) according to brand, storage time and disinfection. Impressions were taken of a metallic master model made of stainless steel with two abutments. Cast models were obtained using type IV gypsum, after disinfection with sodium hypochlorite at 1% or without any disinfection followed by storage for four different times (immediate pouring, and after 24, 72 or 120 hours storage after obtaining the impressions) and the models were measured with a digital caliper. Data were submitted to ANOVA 3-way followed by Tukey’s test (α < 0.05). Results: A statistically significant difference was detected with Jeltrate Plus after 72 and 120 hours in storage (with and without disinfection), as well as Cavex without disinfection. Differences were found for Cavex with disinfection/24 hours storage, when compared to immediate pouring (P < 0.05). The alginates presented similar behavior regarding disinfection for the same time (P > 0.05). Conclusion: Storage longer than 24 hours affects the fidelity of casts. Disinfection does not promote significant alteration at any of the experimental times with either material.

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Section: Discussionmentioning

confidence: 62%

Linear dimensional stability of irreversible hydrocolloids with and without disinfection at different storage times

Pinheiro¹,

Ayala²,

Pomini³

et al. 2019

RSBO

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“…Classically, it has been used to fabricate high detail dental casts [63]. Due to cast stability at room/body temperature and construct porosity, alginate is an attractive material for scaffold fabrication.…”

Section: Novel Stem Cell Delivery Methodsmentioning

confidence: 99%

Advances in Progenitor Cell Therapy Using Scaffolding Constructs for Central Nervous System Injury

Walker¹,

Aroom²,

Jiménez³

et al. 2009

Stem Cell Rev and Rep

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Traumatic brain injury (TBI) is a major cause of morbidity and mortality in the United States. Current clinical therapy is focused on optimization of the acute/subacute intracerebral milieu, minimizing continued cell death, and subsequent intense rehabilitation to ameliorate the prolonged physical, cognitive, and psychosocial deficits that result from TBI. Adult progenitor (stem) cell therapies have shown promise in pre-clinical studies and remain a focus of intense scientific investigation. One of the fundamental challenges to successful translation of the large body of pre-clinical work is the delivery of progenitor cells to the target location/organ. Classically used vehicles such as intravenous and intra arterial infusion have shown low engraftment rates and risk of distal emboli. Novel delivery methods such as nanofiber scaffold implantation could provide the structural and nutritive support Correspondence to: Charles S. Cox, Jr, charles.s.cox@uth.tmc.edu. NIH Public AccessAuthor Manuscript Stem Cell Rev. Author manuscript; available in PMC 2010 May 24. NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript required for progenitor cell proliferation, engraftment, and differentiation. The focus of this review is to explore the current state of the art as it relates to current and novel progenitor cell delivery methods.

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“…On the other hand, other study results presented that it can be poured within 30 minutes without significant dimensional changes. 16 In the comparisons of effects of brand of alginate impression materials on dimensions of orthodontic models at first, second, third, fourth and fifth distances were showed that there are some statistically significant differences between groups. But the results were not uniform.…”

Section: Discussionmentioning

confidence: 99%

Saklama Şartlarının ve Sürelerinin İrreversible Hidrokolloid Ölçü Maddelerinin Boyutsal Stabilitesi Üzerine Etkileri

Özkalaycı¹,

Köroğlu²,

Börekçi³

2017

Cumhuriyet Dental Journal

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The aim of this study was to evaluate the effects of brand, holding solution and storage periods on dimensional stability of irreversible hydrocolloid impression materials.Impressions were taken from a master maxillary typodont, using a newly designed device and five different irreversible hydrocolloid impression materials. A total of 245 impressions were taken and divided into a control group, two main groups and three subgroups through storing procedure and time. Stone models were obtained for each model and five different dimensions were measured and compared to each other.Comparison of the groups according to brand of irreversible hydrocolloid impression materials showed statistically significant differences. While the storage period was statistically important at all distances, storage condition was significant only at some distances.Irreversible hydrocolloid impression materials can be stored in holding solution or sealed plastic bags up to two weeks. Type of the impression material, storage condition and storage period may affect dimensions. Ölçüler, yapay üst çene modelinden oluşturulmuş yeni bir cihaz yardımıyla beş farklı irreversible hidrokolloid ölçü maddesi kullanılarak alındı. Toplamda 245 adet ölçü saklama şartları ve süreleri dikkate alınarak kontrol grubu, iki ana grup ve üç alt gruba ayrıldı. Her bir ölçüden alçı modeller elde edildi, beş farklı uzunluk ölçüldü ve birbiri ile karşılaştırıldı.İrreversible hidrokolloid ölçü maddesinin markasına göre yapılan gruplar arası karşılaştırma istatistiksel olarak anlamlı farklılıklar gösterdi. Saklama süresi tüm mesafe ölçümlerinde istatistiksel olarak anlamlı etki yaratırken iken saklama koşulları bazı mesafe ölçümlerinde anlamlı etkiye sahipti.İrreversible hidrokolloid ölçü maddeleri bekletme solüsyonunda veyahut kilitli plastik torbalarda iki haftaya kadar bekletilebilir. Ölçü maddesinin tipi, saklama şartları ve saklama süresi boyutsal stabilite üzerinde etkilidir.

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Dimensional stability of alginate impressiion material over a four hours time frame

Cited by 10 publications

References 0 publications

Linear dimensional stability of irreversible hydrocolloids with and without disinfection at different storage times

Linear dimensional stability of irreversible hydrocolloids with and without disinfection at different storage times

Advances in Progenitor Cell Therapy Using Scaffolding Constructs for Central Nervous System Injury

Saklama Şartlarının ve Sürelerinin İrreversible Hidrokolloid Ölçü Maddelerinin Boyutsal Stabilitesi Üzerine Etkileri

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