Relative amount of tooth structure removal in different partial- and full-crown preparation designs

2021 ◽  
Author(s):  
Adrian Weber ◽  
Burak Yilmaz ◽  
Urs Brägger ◽  
Martin Schimmel ◽  
Samir Abou-Ayash
Keyword(s):  
Tooth Structure ◽  
Crown Preparation

EFFECT OF VARIOUS STERILIZATION AND DISINFECTION PROTOCOLS OF TOOTH PREPARATION BURS ON THEIR CUTTING EFFICIENCY AND THEIR RELATION TO THE SURFACE ROUGHNESS OF TOOTH PREPARATION – AN INVITRO STUDY

2021 ◽  
pp. 56-59
Author(s):  
Mangipudi Krishna Sravan ◽  
Sumeet Sharma ◽  
A. Jyothi ◽  
Rizwanulla Rizwanulla ◽  
Chandramouli Chandramouli
Keyword(s):  
Surface Roughness ◽  
Tungsten Carbide ◽  
Cutting Efficiency ◽  
Tooth Structure ◽  
Hot Air ◽  
Group A ◽  
Tooth Preparation ◽  
Group B ◽  
Crown Preparation ◽  
Dental Professionals

AIM: This study aims to evaluate the effect of sterilization and disinfection of rotary diamond burs on their cutting efciency and their relation to their surface roughness. A total of 12 (n=12) burs and acrylic typodont teeth of (n=36) were taken MATERIALS AND METHODS: which consists of Diamond TF-13 (MANI) (n=6) and Tungsten carbide bur 169L bur (Prima Dental, Prima Classic) (n=6). These burs were divided into 6 groups. Each group consists of Sub Groups A & B. Sub Group A in each Group Contains Diamond TF-13 (n=1) and Sub Group B in each group contains Tungsten carbide bur 169L bur (n=1). Each single Group is subjected to different methods of sterilization and disinfection with Autoclave, Hot air oven, Ultrasonic, Glass bead, Chemical Disinfection (KORSOLEX) after the tooth preparation. Samples of crown preparation were prepared by placing the mounted tooth on a Modied Milling Machine. After each use, these diamonds and burs were sterilized for 3 cycles of tooth preparation simultaneously and the tooth were evaluated for the surface roughness with a surface prolometer and the resultant values were noted and statistically analyzed. The burs were evaluated for the surface quality under Stereomicroscope and scores were given from 0 to 5 according to the grits and wear present on the surface of the burs. Diamond rotary burs CLINICAL SIGNIFICANCE: should be sterilized and disinfected as it has become a mandatory protocol for the dental professionals to prevent cross-contamination and cross infection between the dentist and dental personnel. However, different sterilization and disinfection methods can have undesirable effects on the ability of the burs to effectively reduce the tooth structure. Irrespective of the type of bur and sterilization process used, the cutting efciency decreases after multiple usage of the burs.

scholarly journals COMPOSITE BUILD-UP-CONSERVATIVE RESTORATION FOR A PERFECT SMILE.

2020 ◽  
Author(s):  
Rahul Koppaka
Keyword(s):  
Resin Composite ◽  
Radiographic Evaluation ◽  
Success Rates ◽  
Tooth Structure ◽  
Anterior Teeth ◽  
Size Discrepancy ◽  
Tooth Form ◽  
Crown Preparation ◽  
Conservative Restoration

BRIEF BACKGROUND The personality of a person is greatly influenced by their smile. Imperfections in the appearance of anterior teeth can reduce a person’s confidence and aesthetics. This case report represents the rehabilitation of a patient with severe tooth deformation in the upper and lower anterior teeth region. The tooth structure was not enough to support porcelain crowns, so Resin Composite was used to build up the tooth and it was supported using a periodontal splint. MATERIALS AND METHODS Clinical examination and radiographic evaluation showed a tooth form-size discrepancy. Due to the lack of tooth structure available for crown preparation, Resin Composite material was used to build up the tooth structure. everStick by GC was used as a periodontal splint to support the structure. DISCUSSION Resin Composite is one of the most conservative and aesthetic techniques available for restoring tooth structure. The different hues and shades available help it to provide a seemingly natural looking restoration. This helps in rehabilitation of a decrepit smile. Long term studies showed high success rates. Failure was seen in patients with paranormal muscle activity like bruxism and in bonding on pre-existing composite restorations. Marginal discolouration was seen in patients with tobacco habits (smoking and smokeless forms). SUMMARY AND CONCLUSION Composite build-up of teeth is a viable option for restoring tooth structure when the case demands aesthetic needs in both young and adult patients. The amount of tooth structure conserved is also much greater than with porcelain crowns. Cost of treatment is also significantly lower. KEY WORDS Composite, Aesthetics, Smile, Conservative treatment, everStick by GC.

The Importance of Abutment Teeth Preparation Guide for Telescopic Double Crown Restorations with Friction Element

DENTA ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 69
Author(s):  
Anindita Apsari ◽  
Chaterina Dyah Nanik K
Keyword(s):  
Case Management ◽  
Female Patient ◽  
Alternative Treatment ◽  
Speech Disorders ◽  
Friction Element ◽  
The Third ◽  
Double Crown ◽  
Abutment Teeth ◽  
Tooth Preparation ◽  
Crown Preparation

<p><strong><em>Background: </em></strong><em>Telescopic double crown restoration can be used as an alternative treatment if the patient wants the tooth to be maintained as long as the supporting tooth has a healthy periodontal. In dental preparation telescopic double crown support requires a preparation guide so that the preparation can be acurate. Minimal preparation can cause the results of the telescopic double crown restoration to be overcontoured, so that the patient may occur uncomfortable, speech disorders and esthetic is not good. <strong>Objective:</strong> to provide information about the importance teeth preparation guidelines for prosthodontic treatment with telescopic double crown restorations. <strong>Case: </strong>A 72-year-old female patient, coming to the dentist wants to make dentures so that she can chew food well and improve her appearance. The remaining teeth are only 13 and 23. In making the denture, the patient wants the teeth to be retained (not removed) and the denture is aesthetically good. <strong>Case Management: </strong>Make a diagnostic wax-up on a semiadjustable articulator to estimate the results of restoration, </em><em>mould</em><em> </em><em>the patient's teeth before starting the preparation with three times putty for the preparation guide and making a temporary crown. the first putty mold is cut mesial-distal right in the middle of the incical teeth, the second putty mould is cut in the labial-palatal direction right in the middle of the tooth mould, the third putty mould is fixed on the stock tray to make the temporary crown. Preparation of teeth 13 and 23 with regard to the putty cut preparation guide, then moulding the maxilla and mandibula with double impressions using an individual tray, after that make the temporary crown directly with the third putty mould. <strong>Conclusion: </strong>The preparation guide of teeth is very necessary so that the making of telescopic double crown restorations is not overcontoured, so that esthetic and retention can be achieved which are good and do not cause speech disorders.</em></p><p><strong><em>Keywords:</em></strong><em> Telescopic double crown, tooth preparation guide, esthetic</em></p><p><strong><em>Correspondence:</em></strong><em> Anindita Apsari. Prostodonsia, Fakultas Kedokteran Gigi, Universitas Hang Tuah, Arief Rahman Hakim 150, Surabaya, Telepon 031-</em><em>5945864, </em><em>5912191, </em><em>E</em><em>mail: <span style="text-decoration: underline;">[email protected]</span></em></p>

Two Adhesive Systems-effect on Adhesion to Tooth Structure

2019 ◽  
Vol 70 (7) ◽  
pp. 2608-2613
Author(s):  
Larisa Simona Deac ◽  
Kamel Earar ◽  
Adela Loredana Colceriu Burtea ◽  
Alexandra Stefania Berghe ◽  
Aurora Antoniac ◽  
...  
Keyword(s):  
Adhesive Systems ◽  
Hybrid Layer ◽  
Tooth Structure ◽  
Selective Etch ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Wisdom Teeth ◽  
Group 2 ◽  
Self Etch ◽  
Group 1

This study evaluates and compares by dye penetration method and SEM photomicrographs the sealing obtained using two different classes of adhesive systems (etch-and-rinse and self-etch with selective etching) with SDR (Dentsply) bulk fill composite. 84 class V cavities were prepared on oral and vestibular face of 42 intact, freshly extracted wisdom teeth. The cavities were randomly divided in two groups and restored: Group 1 with prime &bond one select (Dentsply) and SDR (Dentsply) and Group 2 with prime&bond one Etch&Rinse (Dentsply) and SDR (Dentsply). Prime&bond one Select (Dentsply) is a single component adhesive and can be used in self etch mode, in selective enamel etch mode, or in etch-and-rinse mode. We chosen for this study the selective etch of the enamel mode. Prime&bond one Etch Rinse (Dentsply) is a universal etch-and-rinse one-bottle dental adhesive, designed to be used in two steps. The bulk fill composites are commonly used in modern dentistry due to their properties of low polymerization shrinkage and curing in layer of 4 mm depth, offering the practitioner a fast clinical procedure with good results. The results showed a good sealing at enamel and dentin margins with no statistically significant difference between adhesives, even though the mean of enamel infiltration was smaller for Group1. Furthermore the results show that there were differences between the two groups, for the infiltrations at the enamel, the values of microleakage being arithmetically higher for Group 1, but with no statistically difference between the two groups.SEM images showed for both groups a good adhesion surface with the tooth, but the hybrid layer of the total-etch adhesives is different from the hybrid layer formed by self etch adhesives, in terms of thickness, uniformity. In conclusion both adhesive systems have equivalent sealing qualities and can be successfully used with SDR.

Effect of Gamma Radiation on Mechanical Properties of Tooth Structure

2016 ◽  
Vol 3 (3) ◽  
pp. 209-214
Author(s):  
Rania Hindi ◽  
Hala Hazzaa ◽  
Doaa El-Sharkawy
Keyword(s):  
Mechanical Properties ◽  
Gamma Radiation ◽  
Tooth Structure

Vital Tooth Whitening Techniques. A literature Review

2020 ◽  
Vol 02 ◽  
Author(s):  
Pia Chatterjee Kirk
Keyword(s):  
Soft Tissues ◽  
Treatment Time ◽  
Tooth Bleaching ◽  
Tooth Whitening ◽  
Easy Method ◽  
Tooth Structure ◽  
Dental Esthetics ◽  
Total Treatment Time ◽  
Restorative Materials ◽  
Total Treatment

Background: Vital tooth whitening has become an integral part of esthetic dentistry and remains one of the safest and most economic options today to improve dental esthetics without removing tooth structure. The tooth whitening materials have evolved into three categories: dentist-prescribed/dispensed (in office and patient home-use), and over-thecounter purchased and applied by patients. Objective: This review outlines the latest advances in dentist prescribed vital teeth whitening techniques, effects on tooth structure, soft tissues, and dental restoratives. Areas requiring additional research are also discussed. Methods: Electronic and manual literature search was conducted for key words such as tooth bleaching, and dental bleaching techniques using PubMed/MEDLINE, followed by manual selection of the studies that included whitening procedures in vital teeth. Results: The two main whitening agents are carbamide peroxide (CP) and hydrogen peroxide (HP or H2O2) whose concentration, duration of contact, and total treatment time can alter results. In addition, factors including the type of stain, and age of patient can affect results. Although whitening agents can affect tooth structure, restorative materials, and gingival tissues, the changes are temporary or can be treated using minimally invasive techniques. Conclusion: Areas requiring further research include the actual mechanism of whitening, its effect on tooth structure and restorative materials, and the development of an easy method to quantitate the degree of whitening in the dental office.

Pain management of Dental Caries (Krimi Danta) - A Case Report

2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Amit Kumar ◽  
Mahamad Yunus S. Nabooji
Keyword(s):  
Dental Caries ◽  
Orofacial Pain ◽  
Common Type ◽  
Tooth Decay ◽  
Cotton Swab ◽  
Argemone Mexicana ◽  
Liver Disorders ◽  
Tooth Structure ◽  
Tingling Sensation ◽  
Dental Emergency

Dental caries/Tooth decay is progressive destruction of tooth structure, leading to tooth ache. Tooth ache is the most common type of orofacial pain and when severe it is considered a dental emergency. Pain killers will be the first option to get rid of pain but use of these pain killers have many adverse effects and also its over prescription leads to kidney disorders, liver disorders etc. and in Ayurveda for the management of pain in Krimidanta it is mentioned that, Krimighna (anti-microbial), Vatagna (which relieves Vata) and Ushnaveerya Dravyas (drugs with hot potency) are to be used which can relieve the toothache and discolouration. Hence here an attempt was made to find out an alternate medicine which is effective, has no contraindications and with no side effects. Here the patient was treated with Dantapichu (soaked cotton swab) with Katuparni Ksheera (milk of Argemone Mexicana Linn.) as a local application. After the treatment, a significant response in various symptoms such as tooth pain, tingling sensation and swelling was observed.

Application and Evaluation of a Manikin with a Multimedia System for Preclinical Dental Medicine Training (Preprint)

2020 ◽  
Author(s):  
Yi Yang ◽  
Wei Zhang ◽  
Jia Qing ◽  
Zhi Li
Keyword(s):  
Good Alternative ◽  
Multimedia System ◽  
Cavity Preparation ◽  
System P ◽  
Final Questionnaire ◽  
Crown Preparation ◽  
Medicine Education ◽  
Real Clinical Practice ◽  
Better Than ◽  
Preclinical Training

BACKGROUND Preclinical training on manikins is a key component of dental medicine education. Preclinical practice on traditional manikins and real clinical practice shows massive differences. Specifically, preclinical training on traditional manikins is inefficient. OBJECTIVE The aim of this study is to describe a manikin with a multimedia system and evaluate its effectiveness in preclinical dentistry training. METHODS A total of 159 students participated in this study. Amongst these students, 80 used traditional manikins (Group TM) for preclinical practices, including cavity preparation and full-crown preparation, and 79 used a manikin with a multimedia system (Group MM). The cavity preparation scores and full-crown preparation grades of the two groups were compared. The students and teachers completed a final questionnaire survey to evaluate their experience of preclinical practices using the manikin with a multimedia system. RESULTS Group MM performed better than Group TM in the preclinical practices of cavity preparation and full-crown preparation. The final questionnaire results indicated that students in Group MM were satisfied with the clarity, simulation, helpfulness in mastering operation points quickly and improvement in operation proficiency provided by the manikin with a multimedia system. The teachers were satisfied with the teaching effect of the manikin with a multimedia system and had a high opinion of the students’ mastery. CONCLUSIONS The results of this study indicated that manikins with a multimedia system are a good alternative traditional manikins in preclinical dentistry training.

scholarly journals Choline Acetyltransferase Induces the Functional Regeneration of the Salivary Gland in Aging SAMP1/Kl -/- Mice

2021 ◽  
Vol 22 (1) ◽  
pp. 404
Author(s):  
Nguyen Khanh Toan ◽  
Nguyen Chi Tai ◽  
Soo-A Kim ◽  
Sang-Gun Ahn
Keyword(s):  
Salivary Gland ◽  
Choline Acetyltransferase ◽  
Salivary Flow ◽  
Salivary Secretion ◽  
Functional Markers ◽  
Tooth Structure ◽  
Saliva Secretion ◽  
Gland Function ◽  
The Impact

Salivary gland dysfunction induces salivary flow reduction and a dry mouth, and commonly involves oral dysfunction, tooth structure deterioration, and infection through reduced salivation. This study aimed to investigate the impact of aging on the salivary gland by a metabolomics approach in an extensive aging mouse model, SAMP1/Klotho -/- mice. We found that the salivary secretion of SAMP1/Klotho -/- mice was dramatically decreased compared with that of SAMP1/Klotho WT (+/+) mice. Metabolomics profiling analysis showed that the level of acetylcholine was significantly decreased in SAMP1/Klotho -/- mice, although the corresponding levels of acetylcholine precursors, acetyl-CoA and choline, increased. Interestingly, the mRNA and protein expression of choline acetyltransferase (ChAT), which is responsible for catalyzing acetylcholine synthesis, was significantly decreased in SAMP1/Klotho -/- mice. The overexpression of ChAT induced the expression of salivary gland functional markers (α–amylase, ZO-1, and Aqua5) in primary cultured salivary gland cells from SAMP1/Klotho +/+ and -/- mice. In an in vivo study, adeno-associated virus (AAV)-ChAT transduction significantly increased saliva secretion compared with the control in SAMP1/Klotho -/- mice. These results suggest that the dysfunction in acetylcholine biosynthesis induced by ChAT reduction may cause impaired salivary gland function

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