Document Details
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Document Type |
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Thesis |
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Document Title |
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Evaluation of Caries Removal in Primary Teeth Using an Er:YAG Laser: A Randomized Split-Mouth Clinical and Microscopic Study تقييم إزالة التسوس في الأسنان الأولية باستخدام الإربيوم ياج ليزر: دراسة عشوائية إكلينيكية ومجهرية |
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Subject |
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Faculty of Dentistry |
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Document Language |
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Arabic |
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Abstract |
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Background: Despite significant advancements in the understanding of oral health, dental caries remains a public health issue. The most frequently used and universally accepted technique for removal of caries is mechanical ablation of decayed tissues by means of rotating drills. New minimally invasive strategies, such as the use of lasers to perform highly controlled tissue ablation, have been introduced in dental practice. The use of lasers has decreased pain and discomfort compared to that caused by the use of drills, as well as helped in cases of patients with drill phobia.
Objective: To assess and compare treatment with a 2940 nm erbium:yttrium-aluminum-garnet (Er:YAG) laser versus a conventional rotary treatment during cavity preparation in children with regard to anxiety level, pain perception, restoration integrity, and bond interface quality.
Materials and Methods: In a randomized, blinded trial using a split-mouth design, 35 (9–12-year-old) children with 70 carious deciduous molars were included. The cavity in one quadrant was treated conventionally using a bur, while the cavity in the other quadrant was prepared using an Er:YAG laser. Venham's dental anxiety scale and pulse rate measurement using a fingertip pulse oximeter were used to evaluate dental anxiety levels. The Wong-Baker facial pain rating scale and the number of local anesthesia (LA) required during both interventions were further applied to investigate pain perception. At the one-year follow-up, clinical examinations were conducted to assess the integrity of the restorations according to the Ryge criteria. Lastly, the restored teeth were extracted and histologically evaluated for bond interface quality using scanning electronic microscopy (SEM).
Results: The average age of the participants was 9.4 ± 1.29 years. Males accounted for 51.4% of the participants. The Er:YAG laser and conventional treatment groups showed significant differences in Venham’s scale anxiety levels; the scores were much higher in the conventional treatment group than Er:YAG laser treatment group . Compared to the baseline pulse rate, the mean pulse rate with the conventional method was significantly higher during and after cavity preparation than with the laser method. The Er:YAG laser and conventional treatment groups showed statistically significant differences in the Wong-Baker pain scores; the scores were much higher in the conventional treatment group than Er:YAG laser treatment group. The number of participants who requested LA during the conventional technique was significantly higher than those who requested LA during the laser procedure. There was no significant difference in the clinical integrity of the restorations done by either the conventional or the laser interventions, as measured by the Ryge criteria. Moreover, the SEM evaluation results demonstrated no statistically significant differences between restorations placed following bur preparation and those placed following Er:YAG laser preparation regarding the bond interface quality, and both treatments demonstrated promising results.
Conclusion: This study compared a rotary bur and an Er:YAG laser for cavity preparation in pediatric patients and found that lasers reduced anxiety and pain and required less LA administration in this population. Over a one-year period, no statistically significant differences in the clinical integrity based on the Ryge criteria, nor the bond interface quality based on the SEM evaluation of restorations were observed following class I cavity preparation in primary teeth with either procedure. The present results support the use of Er:YAG laser for cavity preparation in pediatric dentistry to help children stay calm during dental procedures.
Keywords: Er:YAG laser, restoration integrity, dental anxiety, pain perception, split-mouth. |
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Supervisor |
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Prof. Najat Mohammed Ali Farsi |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1445 AH
2023 AD |
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Co-Supervisor |
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Prof. Omar Abd El Sadek El Meligy |
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Added Date |
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Sunday, October 22, 2023 |
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Researchers
| رغدة عماد عبدربه | Abdrabuh, Raghdah | Researcher | Doctorate | |
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