Ahmed Mahmoud, Mohamed EL-Attar, Mohamed Abu Saied, Ingy Hassan
{"title":"吸食电子香烟对 CAD/CAM 丙烯酸树脂颜色稳定性的影响:体内研究","authors":"Ahmed Mahmoud, Mohamed EL-Attar, Mohamed Abu Saied, Ingy Hassan","doi":"10.21608/adjalexu.2022.152513.1302","DOIUrl":null,"url":null,"abstract":"INTRODUCTION: The most common electronic nicotine delivery system is electronic cigarettes. Most of electronic cigarettes consist of a battery and electric heater used to aerosolize a liquid to produce vapor which the user inhales. Poly methyl methacrylate comes in contact with a variety of foods and beverages of different temperatures, as a result, it is prone to absorbing a variety of pollutants, altering its physical structure and appearance. OBJECTIVES: This study aimed to investigate the effects of electronic cigarettes smoking on color stability of CAD/CAM acrylic resin. MATERIAL AND METHODS: This study was in vitro study in which sixty specimens of CAD/CAM acrylic resin was exposed to aerosols which were flavored and non-flavored with nicotine content (0 mg, 6 mg and 12 mg). A portable suction machine was modified to simulate smoking in vivo. Each specimen was exposed to 20 cycles of aerosol released by a single ECIG device using the smoking chamber. Color measurements were performed using a calibrated spectrophotometer on the specimens before and after ECIG exposure RESULTS: Specimens exposed to flavorless 0 mg. nicotine aerosol showed the lowest delta E value 2.39 (±0.16) , while Specimens exposed to flavored 12 mg. nicotine showed the highest values 4.14 (±0.19). No significant difference in color change found between groups exposed to flavorless e-liquid, while a significant difference found between flavored 0 mg. nicotine and 12 mg. nicotine groups (P = 0.002).Also, a significant difference found between flavored 6 mg. nicotine and 12 mg. nicotine groups (P = 0.002). According to Two Way ANOVA, both flavor and nicotine contents have a significant effect on color change (P <0.0001). CONCLUSION: Exposure to flavored and non-flavored electronic cigarettes aerosol of different nicotine concentrations changed the color of acrylic resin. Both flavor and nicotine contents have a significant effect on color change.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":"9 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"EFFECT OF ELECTRONIC CIGARETTES SMOKING ON COLOR STABILITY OF CAD/CAM ACRYLIC RESIN: IN VITRO STUDY\",\"authors\":\"Ahmed Mahmoud, Mohamed EL-Attar, Mohamed Abu Saied, Ingy Hassan\",\"doi\":\"10.21608/adjalexu.2022.152513.1302\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"INTRODUCTION: The most common electronic nicotine delivery system is electronic cigarettes. Most of electronic cigarettes consist of a battery and electric heater used to aerosolize a liquid to produce vapor which the user inhales. Poly methyl methacrylate comes in contact with a variety of foods and beverages of different temperatures, as a result, it is prone to absorbing a variety of pollutants, altering its physical structure and appearance. OBJECTIVES: This study aimed to investigate the effects of electronic cigarettes smoking on color stability of CAD/CAM acrylic resin. MATERIAL AND METHODS: This study was in vitro study in which sixty specimens of CAD/CAM acrylic resin was exposed to aerosols which were flavored and non-flavored with nicotine content (0 mg, 6 mg and 12 mg). A portable suction machine was modified to simulate smoking in vivo. Each specimen was exposed to 20 cycles of aerosol released by a single ECIG device using the smoking chamber. Color measurements were performed using a calibrated spectrophotometer on the specimens before and after ECIG exposure RESULTS: Specimens exposed to flavorless 0 mg. nicotine aerosol showed the lowest delta E value 2.39 (±0.16) , while Specimens exposed to flavored 12 mg. nicotine showed the highest values 4.14 (±0.19). No significant difference in color change found between groups exposed to flavorless e-liquid, while a significant difference found between flavored 0 mg. nicotine and 12 mg. nicotine groups (P = 0.002).Also, a significant difference found between flavored 6 mg. nicotine and 12 mg. nicotine groups (P = 0.002). According to Two Way ANOVA, both flavor and nicotine contents have a significant effect on color change (P <0.0001). CONCLUSION: Exposure to flavored and non-flavored electronic cigarettes aerosol of different nicotine concentrations changed the color of acrylic resin. Both flavor and nicotine contents have a significant effect on color change.\",\"PeriodicalId\":7723,\"journal\":{\"name\":\"Alexandria Dental Journal\",\"volume\":\"9 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Alexandria Dental Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21608/adjalexu.2022.152513.1302\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Alexandria Dental Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21608/adjalexu.2022.152513.1302","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
EFFECT OF ELECTRONIC CIGARETTES SMOKING ON COLOR STABILITY OF CAD/CAM ACRYLIC RESIN: IN VITRO STUDY
INTRODUCTION: The most common electronic nicotine delivery system is electronic cigarettes. Most of electronic cigarettes consist of a battery and electric heater used to aerosolize a liquid to produce vapor which the user inhales. Poly methyl methacrylate comes in contact with a variety of foods and beverages of different temperatures, as a result, it is prone to absorbing a variety of pollutants, altering its physical structure and appearance. OBJECTIVES: This study aimed to investigate the effects of electronic cigarettes smoking on color stability of CAD/CAM acrylic resin. MATERIAL AND METHODS: This study was in vitro study in which sixty specimens of CAD/CAM acrylic resin was exposed to aerosols which were flavored and non-flavored with nicotine content (0 mg, 6 mg and 12 mg). A portable suction machine was modified to simulate smoking in vivo. Each specimen was exposed to 20 cycles of aerosol released by a single ECIG device using the smoking chamber. Color measurements were performed using a calibrated spectrophotometer on the specimens before and after ECIG exposure RESULTS: Specimens exposed to flavorless 0 mg. nicotine aerosol showed the lowest delta E value 2.39 (±0.16) , while Specimens exposed to flavored 12 mg. nicotine showed the highest values 4.14 (±0.19). No significant difference in color change found between groups exposed to flavorless e-liquid, while a significant difference found between flavored 0 mg. nicotine and 12 mg. nicotine groups (P = 0.002).Also, a significant difference found between flavored 6 mg. nicotine and 12 mg. nicotine groups (P = 0.002). According to Two Way ANOVA, both flavor and nicotine contents have a significant effect on color change (P <0.0001). CONCLUSION: Exposure to flavored and non-flavored electronic cigarettes aerosol of different nicotine concentrations changed the color of acrylic resin. Both flavor and nicotine contents have a significant effect on color change.