ผลของสารสกัดจากเมล็ดองุ่นต่อความคงทนของแรงยึดติด ของเนื้อฟันที่ถูกปรับสภาพด้วยโซเดียมไฮโปคลอไรท์

Effect of Grape Seed Extract on Bond Durability to Sodium Hypochlorite-treated Dentin

Name: ภวัต โลเกศเสถียร

ThaSH: โปรแอนโธไชยานิดิน

Classification :.DDC: 615.19

ThaSH: สารสกัด

ThaSH: ทันตกรรม

Abstract: Objective: To study the effect of proanthocyanidin solution, which was extracted from grape seed, on microtensile bond strength and bond durability to sodium hypochlorite-treated dentin after a thermocycling method. Methods: 48 human permanent molars were used in this study. A flat dentin surface was prepared by slicing horizontally parallel to the occlusal surface at 1 mm below the lowest level of the dentino-enamel junction. The specimens were divided into four groups. Group1, the dentin surface was rinsed with normal saline. Group 2, the dentin surface was treated with 5.25% sodium hypochlorite for 30 seconds. Group 3, the dentin surface was treated with 5.25% sodium hypochlorite for 30 seconds, followed by 10% proanthocyanidin solution for 15 seconds. Group 4, the dentin surface was treated with 5.25% sodium hypochlorite for 30 seconds, followed by 15% proanthocyanidin solution for 15 seconds. All specimens were rinsed with water and gently air dried. Dentin specimens were bonded with self-etch adhesive (ClearfillTM SE bond) following the manufacturer’s instructions. Then, ClearfilTM AP-X Esthetics resin composite were built up. After stored in distilled water at 37c for 24 hours, all specimens were cut into hour-glass shape, which had a bonding surface area of 1 mm2 approximately. Each group of specimens was divided into three subgroups by storage time; subgroup 1: microtensile bond strength was tested immediately after hour-glass preparation; subgroups 2 and 3 were subjected to 2,500 and 5,000 cycles of thermocycling respectively. After the time had elapsed, the microtensile strength of the bonds in allspecimens was measured with a cross head speed of 1 mm/min. All bond strength data were statistically analyzed by one-way ANOVA and Tamhane’s multiple comparison (p < 0.05). Failure modes of each groups and interface of dentin specimens were observed by scanning electron microscope. Results: Considering only the 24 hours water storage and 2,500 cycles of thermocycling subgroups, the mean of microtensile bond strength in the groups treated only with sodium hypochlorite were significantly lower than those in all other groups. There were no significant difference between the groups treated with 10% and 15% proanthocyanidin solution and non-treated surface groups. However after 5,000 cycles of thermocycling, there was no significant difference between the three treatment groups. Conclusions: Using 10% and 15% proanthocyanidin solution for 15 seconds to sodium hypochlorite-treated dentin could improve microtensile bond strength of self-etch adhesive after 24 hours storage time and bond durability after aging by thermocycling for 2,500 cycles.

มหาวิทยาลัยเชียงใหม่. สำนักหอสมุด

Address: เชียงใหม่

Email: cmulibref@cmu.ac.th

Name: ภาวิศุทธิ แก่นจันทร์

Role: ประธานกรรมการ

Name: ศุภศันส์ ทิศทวีรัตน์

Role: กรรมการ

Name: สุมนา จิตติเดชารักษ์

Role: กรรมการ

Name: สิทธิกร คุณวโรตม์

Role: กรรมการ

Created: 2558

Modified: 2560-09-26

Issued: 2560-09-26

วิทยานิพนธ์/Thesis

application/pdf

CallNumber: ว 615.19 ภ1711ผ

tha

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: ทันตแพทยศาสตร์

Grantor: มหาวิทยาลัยเชียงใหม่

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	dent60558plg_full.pdf	3.72 MB	3	2020-10-01 15:40:46

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