scholarly journals Influence of whitening gel on pulp chamber temperature rise by in-office bleaching technique

2013 ◽  
Vol 42 (6) ◽  
pp. 432-438
Author(s):  
Sandro Cordeiro Loretto ◽  
Mylena Ranieri Libdy ◽  
Fabiola do Socorro da Rocha Ribeiro ◽  
Esther Marina França Braga ◽  
Karina Gama Kato Carneiro ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Adverse Effects ◽  
Temperature Rise ◽  
Light Flash ◽  
Pulp Chamber ◽  
Dental Bleaching ◽  
Thermal Paste ◽  
Chamber Temperature ◽  
The Aesthetic ◽  
One Way Anova

INTRODUCTION: Dental bleaching is a conservative method for the aesthetic restoration of stained teeth. However, whitening treatments are likely to cause adverse effects when not well planned and executed. OBJECTIVE: This study evaluated the influence of whitening gel on temperature rise in the pulp chamber, using the in-office photoactivated dental bleaching technique. MATERIAL AND METHOD: The root portion of an upper central human incisor was sectioned 3mm below the cemento-enamel junction. The root canal was enlarged to permit the insertion of the K-type thermocouple sensor (MT-401) into the pulp chamber, which was filled with thermal paste to facilitate the transfer of heat during bleaching. Three photosensitive whitening agents (35% hydrogen peroxide) were used: Whiteness HP (FGM), Whiteness HP Maxx (FGM) and Lase Peroxide Sensy (DMC). An LED photocuring light (Flash Lite - Discus Dental) was used to activate the whitening gels. Six bleaching cycles were performed on each group tested. The results were submitted to one-way ANOVA and LSD t-test (α<0.05). RESULT: The lowest mean temperature variation (ºC) was detected for Lase Peroxide Sensy (0.20), while the highest was recorded for Whiteness HP (1.50). CONCLUSION: The Whiteness HP and Whiteness HP Maxx whitening gels significantly affected the temperature rise in the pulp chamber during bleaching, and this variation was dependent on the type of whitening gel used.

scholarly journals In vitro study of the pulp chamber temperature rise during light-activated bleaching

2008 ◽  
Vol 16 (5) ◽  
pp. 355-359 ◽  
Author(s):  
Thaise Graciele Carrasco ◽  
Laise Daniela Carrasco-Guerisoli ◽  
Izabel Cristina Fröner
Keyword(s):  
Temperature Rise ◽  
In Vitro Study ◽  
Vitro Study ◽  
Pulp Chamber ◽  
Chamber Temperature

The effect of laser-activated bleaching with 445 nm and 970 nm diode lasers on pulp chamber temperature rise: an in vitro study

Laser Physics ◽  
2021 ◽  
Vol 31 (5) ◽  
pp. 055601
Author(s):  
Sogol Saberi ◽  
Sima Shahabi ◽  
Saba Tohidkhah ◽  
Shiva Jafarnia ◽  
Parham Pedram
Keyword(s):  
Temperature Rise ◽  
Diode Lasers ◽  
In Vitro Study ◽  
Vitro Study ◽  
Pulp Chamber ◽  
Chamber Temperature

scholarly journals Effect of light and heat on bleaching action of hydrogen peroxide

2021 ◽  
Vol 10 (13) ◽  
pp. e10101320813
Author(s):  
May Anny Alves Fraga ◽  
João Pedro Castello Marcatto ◽  
Talita Malini Carletti ◽  
Lourenço Correr-Sobrinho ◽  
Américo Bortolazzo Correr
Keyword(s):  
Hydrogen Peroxide ◽  
Color Change ◽  
Color Measurement ◽  
Heat Sources ◽  
Dental Bleaching ◽  
Before And After ◽  
Bleaching Action ◽  
Gel Temperature ◽  
One Way Anova ◽  
Effect Of Light

This study aimed to verify the effect of light and heat on bleaching action of 40% hydrogen peroxide (Opalescence Boost PF – Ultradent, BR). Thirty-three bovine incisors were submitted to in-office dental bleaching and divided into three groups (n=11): CO group – control, no light or heat; CA group – heat with a hairdryer; LC group – light and heat with a photoactivation device. For this, a gingival barrier (OpalDam – Ultradent, SP, BR) isolated a circular area around the flatter region of the crown. Afterwards, the bleaching gel was applied for 15 minutes and repeated twice, totaling 45 minutes of application. For the CA and LC groups, the heat source was maintained during the application of the bleaching gel. Temperature was standardized in 5°C for both groups and monitored using a thermocouple inserted into the pulp chamber. The color measurement was performed before and after bleaching using a spectrophotometer. The inner margin of the isolated area of each dental crown was equivalent to the tip of the spectrophotometer (4 mm). Color change was verified by CIEDE2000 system (ΔE00). One way ANOVA and Tukey's test were used to analyze data (p-values set to 5%). The values of ΔE00 were equal for LC (2,66±0,29) and CA (2,44±0,88), and both were higher than CO (1,31±0,37). Therefore, light does not play a fundamental role for in-office dental bleaching. Same dental bleaching outcomes are obtained using different heat sources.

Effect of light-activated bleaching on pulp chamber temperature rise: An in vitro study

2010 ◽  
Vol 38 (2) ◽  
pp. 76-79 ◽  
Author(s):  
Bağdagül Helvacıoğlu Kivanç ◽  
Hacer Deniz Arisu ◽  
Özgür İlke Atasoy Ulusoy ◽  
Baran Can Sağlam ◽  
Güliz Görgül
Keyword(s):  
Temperature Rise ◽  
In Vitro Study ◽  
Vitro Study ◽  
Pulp Chamber ◽  
Chamber Temperature ◽  
Effect Of Light

scholarly journals ALTERAÇÕES MICROESTRUTURAIS NO ESMALTE RELACIONADAS AO CLAREAMENTO DENTAL

Saúde com ◽  
2020 ◽  
Vol 16 (1) ◽  
Author(s):  
André Rodrigo Justino da Silva
Keyword(s):  
Hydrogen Peroxide ◽  
Adverse Effects ◽  
Dental Enamel ◽  
Dental Bleaching

Diante dos efeitos adversos que o clareamento dental pode causar aos dentes realizou-se a presente revisão de literatura sobre as alterações a níveis microestruturais que o esmalte sofre decorrente do clareamento. Foi feita a busca nas bases de dados Scielo e Google acadêmico por artigos publicados somente nos últimos dez anos, a partir das palavras-chave hydrogen peroxide, dental bleaching, dental enamel, adverse effects e microscopy electron scanning. A partir dos quinze artigos selecionados observou-se que todos os autores mostram que existem alterações na estrutura do esmalte decorrente dos agentes clareadores, que diminuem a microdureza do tecido e aumentam a sua rugosidade, além de causar surgimento de erosões, poros, dentre outras perdas minerais. Além disso, o uso de algumas técnicas complementares no clareamento, como o condicionamento ácido prévio, o uso de ativação por LED e a aplicação de flúor neutro subseqüente aumentam os danos à estrutura dental, enquanto outros, como a presença de Cálcio na composição do gel clareador, não demonstram interferir na estrutura mineral do elemento. Por outro lado, o uso do composto de fosfopeptídeos de caseína/fosfato de cálcio amorfo aparenta ser promissor quando associado ao peróxido clareador, sendo necessários mais estudos sobre essa aplicabilidade. Desse modo conclui-se que, apesar de ser conservador, o clareamento dental desempenha potencial para promover perdas minerais na superfície do esmalte dental.

scholarly journals Intrapulp peroxide concentration of teeth submitted to violet LED-assisted in-office bleaching

2018 ◽  
Author(s):  
Carolina Perches ◽  
Vanessa Cavalli Gobbo ◽  
Matheus Kury ◽  
Cínthia Machado Pereira Tabchoury ◽  
Marcelo Giannini
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Test Tube ◽  
Acetate Buffer ◽  
Pulp Chamber ◽  
Carbamide Peroxide ◽  
Led Light ◽  
Peroxide Bleaching ◽  
One Way Anova ◽  
Led Irradiation

The aim of this study was to investigate the intrapulp penetration of peroxide due to in-office bleaching light-activated with a novel violet LED light. Forty bovine incisors were selected and bleaching was performed on enamel surface in a delimited area, as follows (n=10): (LED/HP) 35% hydrogen peroxide bleaching associated with 20 violet LED irradiations of 1-min and 30-s intervals, (HP) 35% hydrogen peroxide bleaching, (LED/CP) 37% carbamide peroxide bleaching associated with violet LED irradiations and (CP) 37% carbamide peroxide bleaching. Bleaching was applied on enamel for 30-min in three appointments with 7-day intervals. In the last session, acetate buffer was placed in the pulp chamber during the gel application and afterwards, transferred to a test-tube with horseradish peroxidase and leucocristal violet. The intrapulp concentration of HP was evaluated by means of spectrophotometry. Data were analyzed by one-way ANOVA and Tukey’s test. Differences were observed in the intrapulp concentration of HP for the LED/HP and LED/CP groups (p=0.025). However, the intrapulp concentration of HP did not increase with the violet LED irradiation (p>0.05). In conclusion, violet LED-irradiation did not influence the intrapulp peroxide concentration, but the HP concentration was dependent on the bleaching gel concentration.

Effects of an In-office Bleaching System (ZOOM™) on Pulp Chamber Temperature In Vitro

2007 ◽  
Vol 8 (4) ◽  
pp. 19-26 ◽  
Author(s):  
A. Rüya Yazici ◽  
Gerard Kugel ◽  
Azita Khanbodaghi
Keyword(s):  
Temperature Rise ◽  
Temperature Increase ◽  
Pulp Chamber ◽  
Pulp Tissue ◽  
Maxillary Central Incisor ◽  
Group I ◽  
Significant Difference ◽  
Chamber Temperature ◽  
Group Ii

Abstract Aim Several new techniques and materials for in-office bleaching have been introduced recently. The aim of this in vitro study was to measure the temperature increase in the pulp chamber of extracted teeth produced by the Zoom!™ in-office bleaching system and to investigate the influence of this light in conjunction with the bleaching gel on pulp temperature rise. Methods and Materials Ten extracted, caries-free, unrestored human maxillary central incisor teeth were used for the study. The root of each tooth was cut approximately 2-3 mm apical to the cementoenamel junction (CEJ), and the apical orifice of the root canal was enlarged. The remaining pulp tissue was removed and the empty pulp chamber was filled with a heat sink compound. A thin K-type thermocouple was inserted into the pulp chamber through the cut root area. The root surfaces of the teeth were partially submerged in a water bath during the testing procedure at 37°C. A whitening gel containing 25% hydrogen peroxide was applied to the buccal surfaces of all ten teeth and exposed to a Zoom!™ activation light for twenty minutes for three times; this was designated as Group I. The same teeth were then exposed with the Zoom!™ light for the same time period without the application of the bleaching gel and designated as Group II. The intrapulpal temperature pre-treatment (baseline) and the temperature increase during treatment was measured for both treatment groups. Results There was a statistically significant difference between the two groups (p=0.003). Application of the Zoom!™ light in conjuction with the application of bleaching gel produced a greater temperature rise than did the light alone. The mean temperature rise for Group I (light and bleaching gel) was 1.11°C (0.18°C) and 1.01°C (0.12°C) for Group II (light alone) at the end of a five-minute exposure. Conclusion The Zoom!™ light either used with or without bleaching gel showed no significant increase in the intrapulpal temperature of teeth when used for the recommended exposure time. Citation Yazici AR, Khanbodaghi A, Kugel G. Effects of an In-office Bleaching System (ZOOM™) on Pulp Chamber Temperature In Vitro. J Contemp Dent Pract 2007 May;(8)4:019-026.

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