MyMedR

Fulltext Cytotoxicity evaluation of a new fast set highly viscous conventional glass ionomer cement with L929 fibroblast cell line

Ahmed HM, Omar NS, Luddin N, Saini R, Saini D

J Conserv Dent, 2011 Oct;14(4):406-8.

PMID: 22144813 DOI: 10.4103/0972-0707.87212

This study aims to evaluate the cytotoxicity of a new fast set highly viscous conventional glass ionomer cement (GIC) with L929 fibroblasts.

Fulltext Different surface preparation techniques of porcelain repaired with composite resin and fracture resistance

Abd Wahab MH, Bakar WZ, Husein A

J Conserv Dent, 2011 Oct;14(4):387-90.

PMID: 22144809 DOI: 10.4103/0972-0707.87207

Porcelain from prosthesis such as crown or bridge can be fractured if exposed to trauma; and, can be repaired at chairside using composite resin.

Fulltext Management and prognosis of teeth with trauma induced crown fractures and large periapical cyst like lesions following apical surgery with and without retrograde filling

Ahmed HM, Al Rayes MH, Saini D

J Conserv Dent, 2012 Jan;15(1):77-9.

PMID: 22368341 DOI: 10.4103/0972-0707.92612

Crown fractures are common detrimental consequences of dental traumatic injuries. Early management of such cases is mandatory in order to prevent subsequent pathological changes that could further complicate the treatment. Pulp necrosis, chronic and cystic apical periodontitis can be the fate if these teeth are left untreated. Despite these serious complications, root canal treatment followed by apical surgery is considered a valid treatment option when such cases become complicated with large periapical lesions. However, whether a retrograde filling is essential to be placed or not is still a matter of debate. This case report discusses the orthograde endodontic management, the surgical approach and the clinical outcomes of longstanding crown fractured teeth with large cyst-like periapical lesions with and without retrograde filling.

Fulltext Effects of curing mode of resin cements on the bond strength of a titanium post: An intraradicular study

Reza F, Lim SP

J Conserv Dent, 2012 Apr;15(2):123-6.

PMID: 22557808 DOI: 10.4103/0972-0707.94576

To compare push-out bond strength between self-cured and dual-cured resin cement using a titanium post.

Fulltext The effect of different sealer placement techniques on sealing Ability: An in vitro study

Said HM, Bakar WZ, Farea M, Husein A

J Conserv Dent, 2012 Jul;15(3):257-60.

PMID: 22876014 DOI: 10.4103/0972-0707.97952

The aim of this in vitro study was to evaluate the sealing ability of an endodontic sealer following different techniques of its placement.

Fulltext The antibacterial activity of sodium hypochlorite and chlorhexidine against Enterococcus faecalis: A review on agar diffusion and direct contact methods

Luddin N, Ahmed HM

J Conserv Dent, 2013 Jan;16(1):9-16.

PMID: 23349569 DOI: 10.4103/0972-0707.105291

Complete debridement and disinfection of the root canal system are fundamental requirements for successful endodontic treatment. Despite the morphological challenges of the internal root anatomy, root canal irrigants play an important role in the optimization of the root canal preparation, which is essentially a chemo-mechanical procedure. Enterococcus faecalis is one of the most resistant microorganisms that dominants the microbial ecosystem of persistent periradicular lesions in retreatment cases. For that reason, many in vitro and in vivo studies evaluated and compared the antibacterial activity of sodium hypochlorite and chlorhexidine at varying concentrations using different experimental models against this microorganism. However, many controversies with regard to the ideal irrigant and concentration do in fact exist. Hence, this review aims to discuss the antibacterial activity of these two main root canal irrigants against Enterococcus faecalis using the agar diffusion and direct contact methods and the possible modulating factors responsible for inconsistent findings among different studies. In addition, the disinfection potential of both chemical agents on gutta percha and Resilon cones are also discussed. The source of this review was conducted through an electronic literature search using PubMed database from December 1997 until December 2011, which analyze the related laboratory investigations of both irrigants, published in major endodontic journals.

Fulltext Effects of home bleaching on surface hardness and surface roughness of an experimental nanocomposite

Zuryati AG, Qian OQ, Dasmawati M

J Conserv Dent, 2013 Jul;16(4):356-61.

PMID: 23956541 DOI: 10.4103/0972-0707.114362

Home bleaching agents may not be safe for composite resins. The purpose of this study was to evaluate the effects of 10 and 20% Opalescence(®) PF home bleaching agents on the surface roughness and hardness of universal nanocomposite (Filtek Z350), anterior nanocomposite (KeLFiL), and nanohybrid composite (TPH 3).

Fulltext Physical properties and cytotoxicity comparison of experimental gypsum-based biomaterials with two current dental cement materials on L929 fibroblast cells

Mahshim N, Reza F, Omar NS

J Conserv Dent, 2013 Jul;16(4):331-5.

PMID: 23956536 DOI: 10.4103/0972-0707.114364

To evaluate physical properties and cytotoxicity of pure gypsum-based (pure-GYP) and experimental gypsum-based biomaterials mixed with polyacrylic acid (Gyp-PA). The results were compared with calcium hydroxide (CH) and glass ionomer cement (GIC) for application as base/liner materials.

Fulltext Comparative radiopacity of six current adhesive systems

de Moraes Porto IC, Honório NC, Amorim DA, de Melo Franco AV, Penteado LA, Parolia A

J Conserv Dent, 2014 Jan;17(1):65-9.

PMID: 24554865 DOI: 10.4103/0972-0707.124151

The radiopacity of contemporary adhesive systems has been mentioned as the indication for replacement of restorations due to misinterpretation of radiographic images.

Fulltext The assessment of surface roughness and microleakage of eroded tooth-colored dental restorative materials

Hussein TA, Bakar WZ, Ghani ZA, Mohamad D

J Conserv Dent, 2014 Nov;17(6):531-5.

PMID: 25506139 DOI: 10.4103/0972-0707.144585

To investigate the effect of acidic solution on surface roughness and microleakage of tooth-colored restorative materials.

Fulltext Shear bond strength of computer-aided design and computer-aided manufacturing feldspathic and nano resin ceramics blocks cemented with three different generations of resin cement

Ab-Ghani Z, Jaafar W, Foo SF, Ariffin Z, Mohamad D

J Conserv Dent, 2015 Sep-Oct;18(5):355-9.

PMID: 26430296 DOI: 10.4103/0972-0707.164028

To evaluate the shear bond strength between the dentin substrate and computer-aided design and computer-aided manufacturing feldspathic ceramic and nano resin ceramics blocks cemented with resin cement.

Fulltext An ex-vivo comparative study of root-end marginal adaptation using grey mineral trioxide aggregate, white mineral trioxide aggregate, and Portland cement under scanning electron microscopy

Baranwal AK, Paul ML, Mazumdar D, Adhikari HD, Vyavahare NK, Jhajharia K

J Conserv Dent, 2015 Sep-Oct;18(5):399-404.

PMID: 26430305 DOI: 10.4103/0972-0707.164054

Where nonsurgical endodontic intervention is not possible, or it will not solve the problem, surgical endodontic treatment must be considered. A major cause of surgical endodontic failures is an inadequate apical seal, so the use of the suitable substance as root-end filling material that prevents egress of potential contaminants into periapical tissue is very critical.

Fulltext The comparison between two irrigation regimens on the dentine wettability for an epoxy resin based sealer by measuring its contact angle formed to the irrigated dentine

Mohan RP, Pai AR

J Conserv Dent, 2015 Jul-Aug;18(4):275-8.

PMID: 26180409 DOI: 10.4103/0972-0707.159717

The aim was to assess the influence of two irrigation regimens having ethylenediaminetetraacetic acid (EDTA) and ethylenediaminetetraacetic acid with cetrimide (EDTAC) as final irrigants, respectively, on the dentine wettability for AH Plus sealer by comparing its contact angle formed to the irrigated dentine.

Fulltext The stamp technique for direct Class II composite restorations: A case series

Alshehadat SA, Halim MS, Carmen K, Fung CS

J Conserv Dent, 2016 9 23;19(5):490-3.

PMID: 27656074 DOI: 10.4103/0972-0707.190021

BACKGROUND: "Stamp" technique is a new method for placing large composite restorations with accurate occlusal topography. It was introduced mainly to restore Class I cavities and erosively damaged teeth. This technique is indicated when the preoperative anatomy of the tooth is intact and not lost due to the carious lesion. A precise tooth-like filling an accurate functional occlusion is obtained when the stamp technique is applied. However, using this technique to restore Class II cavities is not established yet.

AIM: To introduce modifications of the stamp technique that make it applicable to restore Class II composite restorations.

MATERIALS AND METHODS: The traditional materials and tools used for direct composite restorations are needed with no additional instruments. Clinical illustrations and step-by-step description are provided in this paper.

RESULTS AND CONCLUSION: Using the stamp technique to restore Class II cavities is achievable, simple and practical, and result in a very accurate anatomical restoration.

Fulltext A systematic review of randomized controlled trials on sterilization methods of extracted human teeth

Western JS, Dicksit DD

J Conserv Dent, 2016 Jul-Aug;19(4):343-6.

PMID: 27563183 DOI: 10.4103/0972-0707.186457

AIM OF THIS STUDY: The aim was to evaluate the efficiency of different sterilization methods on extracted human teeth (EHT) by a systematic review of in vitro randomized controlled trials.
METHODOLOGY: An extensive electronic database literature search concerning the sterilization of EHT was conducted. The search terms used were "human teeth, sterilization, disinfection, randomized controlled trials, and infection control." Randomized controlled trials which aim at comparing the efficiency of different methods of sterilization of EHT were all included in this systematic review.
RESULTS: Out of 1618 articles obtained, eight articles were selected for this systematic review. The sterilization methods reviewed were autoclaving, 10% formalin, 5.25% sodium hypochlorite, 3% hydrogen peroxide, 2% glutaraldehyde, 0.1% thymol, and boiling to 100°C. Data were extracted from the selected individual studies and their findings were summarized.
CONCLUSION: Autoclaving and 10% formalin can be considered as 100% efficient and reliable methods. While the use of 5.25% sodium hypochlorite, 3% hydrogen peroxide, 2% glutaraldehyde, 0.1% thymol, and boiling to 100°C was inefficient and unreliable methods of sterilization of EHT.
KEYWORDS: Autoclaving; extracted human teeth; formalin; sterilization methods; systematic review

Fulltext Effect of dried sunflower seeds on incisal edge abrasion: A rare case report

Rath A, Ramamurthy PH, Fernandes BA, Sidhu P

J Conserv Dent, 2017 9 1;20(2):134-136.

PMID: 28855763 DOI: 10.4103/0972-0707.212237

Tooth surface loss (TSL) is a complex phenomenon characterized by the loss of hard tooth structure at various locations of the teeth, usually due to more than one factor. TSL due to abrasion can be significant in patients consuming coarse, abrasive diet. The present case reports an interesting incisal edge abrasion in a female patient, attributed to a particular dietary behavior of long-term consumption of sunflower seeds. All her family members and most of the people from her native place were also reported to have similar lesions by the patient. Larger epidemiological studies to assess the prevalence and severity of such abrasive lesions in geographic areas with this particular dietary habit need to be carried out so that people may be made aware and educated about alternative ways of eating sunflower seeds that will not cause any form of tooth wear.

Apical extrusion of debris in four different endodontic instrumentation systems: A meta-analysis

Western JS, Dicksit DD

J Conserv Dent, 2017 Jan-Feb;20(1):30-36.

PMID: 28761250 DOI: 10.4103/0972-0707.209066

BACKGROUND: All endodontic instrumentation systems tested so far, promote apical extrusion of debris, which is one of the main causes of postoperative pain, flare ups, and delayed healing.

OBJECTIVES: Of this meta-analysis was to collect and analyze in vitro studies quantifying apically extruded debris while using Hand ProTaper (manual), ProTaper Universal (rotary), Wave One (reciprocating), and self-adjusting file (SAF; vibratory) endodontic instrumentation systems and to determine methods which produced lesser extrusion of debris apically.

METHODOLOGY: An extensive electronic database search was done in PubMed, Scopus, Cochrane, LILACS, and Google Scholar from inception until February 2016 using the key terms "Apical Debris Extrusion, extruded material, and manual/rotary/reciprocating/SAF systems." A systematic search strategy was followed to extract 12 potential articles from a total of 1352 articles. The overall effect size was calculated from the raw mean difference of weight of apically extruded debris.

RESULTS: Statistically significant difference was seen in the following comparisons: SAF < Wave One, SAF < Rotary ProTaper.

CONCLUSIONS: Apical extrusion of debris was invariably present in all the instrumentation systems analyzed. SAF system seemed to be periapical tissue friendly as it caused reduced apical extrusion compared to Rotary ProTaper and Wave One.

Fulltext Comparative evaluation of apically extruded debris during root canal instrumentation using two Ni-Ti single file rotary systems: An in vitro study

Singbal K, Jain D, Raja K, Hoe TM

J Conserv Dent, 2017 Mar-Apr;20(2):64-67.

PMID: 28855748 DOI: 10.4103/0972-0707.212236

BACKGROUND: Apical extrusion of debris during instrumentation is detrimental to the patient.
AIM: The aim of this study was to evaluate the apical extrusion of debris during root canal instrumentation using two single file rotary Ni-Ti systems.
MATERIALS AND METHODS: Thirty freshly extracted mandibular premolars with straight roots were sterilized and divided into two groups instrumented using: One Shape rotary Ni-Ti system with Endoflare orifice shaper (Group 1) and Neo-Niti rotary Ni-Ti system with C1 orifice shaper (Group 2). Preweighed Eppendorf tubes fitted for each tooth before instrumentation. During instrumentation, 1 mL of distilled water with a 30-gauge needle was used to irrigate after every instrument. Tips of the tooth were irrigated with 2 ml distilled water after removal from Eppendorf tubes. The total volume of irrigant in each group was the same 8 ml. All tubes were incubated at 68°C for 15 days and subsequently weighed. The difference between pre- and post-debris weights was calculated, and statistical analysis was performed using independent t-test and level of significance was set at 0.05.
RESULTS: The difference between pre- and post-weights was significantly greater for the One Shape system.
CONCLUSIONS: The Neolix Niti single file was associated with less extrusion compared to One Shape single file system.

Fulltext Cytotoxicity of gypsum-based biomaterial for direct pulp capping using stem cells from human exfoliated deciduous teeth

Subhi H, Reza F, Husein A, Nurul AA

J Conserv Dent, 2018 4 10;21(1):21-25.

PMID: 29628642 DOI: 10.4103/JCD.JCD_86_17

Aim: The aim of this study was to evaluate the cytotoxicity effects of experimental gypsum-based biomaterial prepared with various concentrations of chitosan (Gyp-CHT).

Materials and Methods: The study was performed using cell viability assay for mitochondrial dehydrogenase activity in stem cells from human exfoliated deciduous teeth (SHED), after 1, 2, and 3 days of exposure to the biomaterial extracts of varying concentrations. Differences in mean cell viability values were assessed by one-way analysis of variance, followed by Dunnett T3 post hoc test for multiple comparisons (P < 0.05).

Results: The cell viability to Gyp-CHT in low extract concentrations was statistically similar to that of the control and different from that of high extract concentrations. Gyp-5% CHT showed the highest percentage of cell viability with 110.92%, 108.56%, and 109.11%. The cell viability showed a tendency toward increment with low extract concentration and no constant effect of CHT on cell viability toward higher or lower.

Conclusions: Gyp-CHT biomaterial has no cytotoxic effects on the cultured SHED.

Fulltext Using a syringe needle to cut dentin and dislodge and remove a metallic obstruction from the root canal

Vivekananda Pai AR, Arora V

J Conserv Dent, 2018 4 21;21(2):230-232.

PMID: 29674831 DOI: 10.4103/JCD.JCD_316_16

A metallic obstruction in the canal orifice of a maxillary right canine could not be bypassed during endodontic treatment. Aids such as ultrasonics and retrieval kits were not available for the removal of the obstruction. Therefore, a novel approach using a disposable syringe needle was employed. A 22-gauge needle was inserted into the orifice and turned in an arc with a gentle apical pressure and alternate rocking motion around the obstruction. This procedure was repeated few times to cut dentin and successfully dislodge and remove the obstruction using the sharp beveled tip of the needle. This case report demonstrates that, in the absence of other aids, the use of a disposable syringe needle is a simple, economical, and yet an effective technique for conservative removal of dentin and to dislodge and remove an obstruction from the root canal. However, its effectiveness depends on case selection and straight-line accessibility to the obstruction.

Displaying publications 1 - 20 of 34 in total