Dentistry Commons^™

Influence Of Fluoride And Stress On The Mechanical Properties Of Nickel-Titanium Coils, Jennifer Ann Fehrman Roloff

Master's Theses (2009 -)

Objective: The objective of this study was to determine the influence of fluoride and stress on the mechanical properties of nickel-titanium open coil springs. Materials and Methods: Sentalloy nickel-titanium open coil springs (15 mm length) were divided into five groups. A control group was tested mechanically in as-received condition. The other four experimental groups were exposed to artificial saliva (Fusayama-Meyer solution) at 37oC for 12 weeks in a 2x2 factorial design with fluoride exposure and stress (compression) as the two factors. Those springs which were under compression were held at 5 mm in length for the entirety of the testing …

Mechanical Properties And Patient Perceptions Of Commonly Used Clear Aligner Systems As-Received And After Clinical Use, Lauren Evan Montoure Teske

Master's Theses (2009 -)

Background/Objectives: This study aimed to investigate the viscoelastic properties of two clear aligner systems, Invisalign (Align Technology, Inc, Santa Clara, CA, USA) and Simpli5 (Allesee Orthodontic Appliances, Sturtevant, WI, USA), and determine if there was a difference after use. A survey assessed patients’ perceptions of the aligner material and post-treatment satisfaction. Materials/Methods: Mandibular aligners were collected from two patients after 2-3 weeks of use (n=6). Duplicate, unused aligners were obtained for each patient (n=6). Dynamic mechanical analysis (DMA) characterized the viscoelastic properties of the materials. Three tests were done on separate specimens: frequency scan (0.1-10 Hz under 25 μm displacement …

Thermomechanical Characterization Of Variable Force Niti Orthodontic Archwires, Anjali Sudershan Krishan Mehta

Master's Theses (2009 -)

ABSTRACT THERMOMECHANICAL CHARACTERIZATION OF VARIABLE FORCE NITI ORTHODONTIC ARCHWIRES Anjali Mehta, BDS MDS Marquette University, 2015 Introduction: Nickel-Titanium (NiTi) archwires, due to their properties of superelasticity and shape memory, have been extensively used in orthodontic mechanotherapy. However, one of the shortcomings of these wires is that they deliver constant forces across the entire arch. The amount of force needed to move a tooth is a function of the surface area of the tooth and its supporting bone; and is lesser for single rooted anterior teeth compared to larger molars. The introduction of heat treatment of NiTi wires and the influence …

Oral Health Care Access In New Hampshire, Eleanor M. Jaffee, Joan Widmer, Lisa Speropolous

Carsey Publications

In this brief, authors Eleanor M. Jaffee, Joan Widmer, and Lisa I. Speropolous provide an overview of the current state of oral health care in New Hampshire. They report that although New Hampshire is rated above the national average on most measures of pediatric oral health, performance varies substantially by county and by region. Access to adequate oral health care for both children and adults is particularly challenging for low-income families in the sparsely populated northern region of the state. Programs that address oral health care access issues by bringing services to those with the greatest need, such as school-based …

Induced Ankylosis Of A Primary Molar For Skeletal Anchorage In The Mandible As Alternative To Mini-Implants, Matina V. Angelopoulou, Despina Koletsi, George Vadiakas, Demetrios J. Halazonetis

School of Dentistry Faculty Research and Publications

Background

Mesial protraction of mandibular posterior teeth requires increased anchorage to avoid undesired tooth movements. Orthodontic mini-implants have become a popular and successful way to increase skeletal anchorage in such cases. However, mini-implants may cause injury to adjacent teeth or anatomical structures and may lead to tissue inflammation. Induced ankylosed primary teeth have been used in the past as abutments for the protraction of the maxilla in cases of maxillary retrognathism. However, this technique has not been described in the literature for the protraction of mandibular molars. The aim of this paper is to present, through a case report, an …

Ada News - 06/15/2015, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Ada News - 06/01/2015, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Comparison Of Mechanical And Optical Properties Between Three Different Cad/Cam Materials, Aasem Mutlaq Alhenaki

Student Theses, Dissertations and Capstones

Objective. This study aims to compare several mechanical and optical properties between three different CAD/CAM materials. The properties tested are: flexural strength, modulus of elasticity, hardness, translucency and surface gloss. Background. Typically, CAD/CAM restorations are either ceramic based or resin based. A new resin-ceramic hybrid material has recently been introduced and is thought to combine the advantages of both materials. Methods. Samples were divided into three groups, leucite-reinforced porcelain (IPS Empress CAD), lithium dicilicate (IPS e.max CAD) and resin-ceramic hybrid material (Vita Enamic). Twenty-six bar-shaped specimens were fabricated for each group by cutting standard CAD/CAM blocks. 3-point bending test and …

Commencement Program 2015, Loma Linda University

Commencement Programs

CONTENTS

1 | Message from the President

3 | 2015 Events of Commencement

5 | The Academic Procession

7 | Significance of Academic Regalia

9 | The Good Samaritan

10 | University History Highlights

12 | Loma Linda University Song - "Healing Love"

13 | The Speakers

23 | The University Honorees

45 | The School Honorees

72 | The Programs

• School of Medicine, 73
• School of Pharmacy, 95
• School of Dentistry, 103
• School of Allied Health Professions, 122
• School of Allied Health Professions - Physical Therapy, 143
• School of Public Health, 154
• School of Behavioral Health and School of …

Morphologic Custom Shade Guide Fabricated With Feldspathic Ceramic, Seok-Hwan Cho, William W. Nagy

School of Dentistry Faculty Research and Publications

No abstract provided.

Congenital Adrenal Hyperplasia: A Case Report With Premature Teeth Exfoliation And Bone Resorption, Matina V. Angelopoulou, Elias D. Kontogiorgos, Dimitris E. Emmanouil

School of Dentistry Faculty Research and Publications

Congenital adrenal hyperplasia (CAH) is an inherited autosomal recessive disorder characterized by insufficient production of cortisol. The aim of this case report was to present a child with CAH, premature exfoliation of primary teeth and accelerated eruption of his permanent teeth related to bone resorption. A 4.5-year-old Caucasian boy with CAH and long-term administration of glucocorticoids was referred for dental restoration. Clinical examination revealed primary molars with worn stainless steel crowns, severe attrition of the upper canines, and absence of the upper incisors. Before the completion of treatment, abnormal mobility of the first upper primary molars and the lower incisors …

Desmoplastic Fibroma Of The Mandible: A Series Of Three Cases And Review Of Literature, T. R. Woods, D. M. Cohen, M. N. Islam, Yeshwant B. Rawal, I. Bhattacharyya

School of Dentistry Faculty Research and Publications

The desmoplastic fibroma (DF) is a rare, fibroblastic lesion of bone that histologically resembles the desmoid tumor of soft tissue. Although classified as benign, it frequently demonstrates aggressive behavior, often causing tooth mobility, extensive bone destruction, and has a moderate to high recurrence rate. We present three cases of DF in the mandible: the first in a 13 year old female involving the mandibular body in the region of teeth #s 27–#28, the second in a 57 year old female with a lesion apical to tooth #30, and the third in a 20-year-old female involving the left posterior mandible. Clinical, …

Diagnosis Of Second Mesiobuccal Canal In Maxillary First Molars Among Patients Visiting A Tertiary Care Hospital., Muhammad Hasan Hameed, Farhan Raza Khan

Department of Surgery Docs

No abstract provided.

17th Annual Pacific Research Day Abstracts, University Of The Pacific

Excellence Day

No abstract provided.

Determination Of Dioctyl Phthalate (Dehp) Concentration In Polyvinyl Chloride (Pvc) Plastic Parts Of Toothbrushes, Ghazal Sadeghi, Elham Ghaderian, Anne O'Connor

The Downtown Review: An Interdisciplinary Journal Written and Peer-Reviewed by Mandel Honors College Students at Cleveland State University

Phthalates are chemicals that are widely used in daily products and polyvinyl chloride (PVC) plastics, mainly because of their ability to enhance flexibility and durability. The presence of phthalates in various products contributes to the substantial exposure that all consumers may experience. Continuity in phthalate exposure has several side effects, including endocrine disruption, neurological damage, asthma, hormonal imbalances, obesity, infertility, genital defects, and testicular cancer. The purpose of this research experiment was to determine the Dioctyl phthalate (DEHP) concentration of PVC plastic parts of toothbrushes. The method used to conduct the experiment was Gas Chromatography/Mass Spectrometry. The result showed that …

Ada News - 05/18/2015, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Exploring The Relationship Between Preadmission Factors And Dental School Student Success, Nadege J. Dady

Seton Hall University Dissertations and Theses (ETDs)

This quantitative study assessed the preadmission factor relationship to success at a graduate dental school. Preadmission factors are used nationally to assess student ability. There are concerns about the reliability of these factors in measuring URM student ability. 1,275 records were collected and assessed for those admitted between the years 1998-2009. Multiple linear regression analysis was conducted to assess the relationship of the pre admission variables to the continuous variable Dental School GPA. Logistic regression analysis was conducted to assess the relationship of the pre admission variables to the dichotomous categorical variables of Licensure Obtainment and Degree Awarded Status. Based …

The Correlation Of Childhood Obesity And Dental Caries In South Central Kentucky, Christina Guthrie

Mahurin Honors College Capstone Experience/Thesis Projects

Does obesity have an effect on dental caries in South Central Kentucky Previous research has presented information stating a high prevalence of tooth decay found within the state of Kentucky. In addition, studies have indicated an elevated rate of childhood obesity found within the region. As a future dental hygienist in Kentucky, it is important to understand if a correlation exists between tooth decay and childhood obesity to better educate both patients and caregivers. The investigation will utilize a sample of patient records through a retrospective collection process. A correlation of dental caries and childhood obesity is expected to be …

The Effect Of Cheese On The Ph Levels In The Oral Cavity, Madison R. Hayden

Mahurin Honors College Capstone Experience/Thesis Projects

In the Fall of 2014, research was conducted with 20 participants on the campus of Western Kentucky University. Participants were given two ounces of Coca Cola^® to drink and the pH level in their mouth was tested one minute later. After waiting a minute, the participants were given a one ounce square of mild cheddar cheese to eat and the pH level was tested again one minute later. For further study, this project will be expanded to include more subjects as well as an increased exposure time to Coca Cola^®. This research is conducted to help support …

Subgingival Air Polishing In Dentistry, Chelsea T-P. Howell

Mahurin Honors College Capstone Experience/Thesis Projects

Modern statistics have shown that periodontal disease is highly prevalent in today’s society. Periodontal disease has detrimental effects to the oral cavity, including: bone less, recession, and tooth mobility. A strong correlation has been linked to the use of the subgingival air polisher on patients with active periodontal disease and the regression of the disease after being treated with the device. This is being compared to traditional hand-scaling beneath the gingiva margin which is less efficient in removing biofilm subgingivally. Recent studies (Petersilka et al.) are confirming this to be true by treating patients with both hand-scaling and the subgingival …

Bone Stimulation Implemented Using The L-Prf Technique Within The Clinical Setting In Kentucky And Tennessee, Kyndall A. Hudson

Mahurin Honors College Capstone Experience/Thesis Projects

Leukocyte Platelet Rich Fibrin (L-PRF) is an autologous graft that is obtained from the patient’s blood. This provides a condensed network of fibrin that is saturated with cytokines, growth factors, and platelets. L-PRF speeds up the healing process and also optimizes bone grafting results.

Dental treatment options are expanding and new techniques within the office setting are constantly being developed. Present treatment modalities can assist with the stimulation of tissue formation after dental surgical procedures, leading to various results. The placement of L-PRF provides enhanced healing following specific dental procedures using the patient’s donor tissue; therefore, reducing the opportunity for …

Barriers To Care And Buyer Behavior In Relation To Oral Hygiene, Allison E. Mccutchen

Mahurin Honors College Capstone Experience/Thesis Projects

How much of an impact do advertising, brand loyalty, and socioeconomic status have on the overall oral-health knowledge and dental care product purchases of consumers? A survey was distributed to collect data on consumers’ background, oral hygiene purchasing habits, and decision making rationales. It was assumed that those with minimal access to care and minimal oral-health knowledge would be purchasing products based on sale prices, or the promise of improved esthetics, whereas consumers with increased access to care would likely make their purchasing decisions based on the recommendations of a dental professional and be potentially more interested in trying new …

The Importance Of Educating Dental And Dental Hygiene Students On The Correlation Between Vitamin D Deficiency And Dental Caries, Sara Brown

Mahurin Honors College Capstone Experience/Thesis Projects

Recent studies from the U.S. National Library of Medicine have shown that vitamin D deficiency is rapidly increasing among the adult population. Vitamin D deficiency has many effects on the body, such as bone pain and muscle weakness. A strong correlation has been noticed in humans with vitamin D deficiency and decreased exposure to natural sunlight, which is vital to absorb the vitamin D they have ingested. Those suffering from milk allergies or are following a strict vegan diet may also have some implication of a vitamin D deficiency. Recent studies (Hujoel, 2012) have also shown that there is a …

Ada News - 05/04/2015, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

The In Vivo Granulopoietic Response To Dexamethasone Injection Is Abolished In Perforin-Deficient Mutant Mice And Corrected By Lymphocyte Transfer From Nonsensitized Wild-Type Donors, Pedro Xavier-Elsas, Cassio Luiz Coutinho Almeida-Da-Silva, Bruno Marques Vieira, Daniela Masid-De-Brito

All Dugoni School of Dentistry Faculty Articles

Exogenously administered glucocorticoids enhance eosinophil and neutrophil granulocyte production from murine bone-marrow. A hematological response dependent on endogenous glucocorticoids underlies bone-marrow eosinophilia induced by trauma or allergic sensitization/challenge. We detected a defect in granulopoiesis in nonsensitized, perforin-deficient mice. In steady-state conditions, perforin- (Pfp-) deficient mice showed significantly decreased bone-marrow and blood eosinophil and neutrophil counts, and colony formation in response to GM-CSF, relative to wild-type controls of comparable age and/or weight. By contrast, peripheral blood or spleen total cell and lymphocyte numbers were not affected by perforin deficiency. Dexamethasone enhanced colony formation by GM-CSF-stimulated progenitors from wild-type controls, but not …

Sustained Release Of Calcium Hydroxide From Poly(Dl-Lactide-Co-Glycolide) Acid Microspheres For Apexification, Bernardino Isaac Cerda-Cristerna, Alejandro Breceda-Leija, Verónica Méndez-González, Daniel Chavarría-Bolaños, Héctor Flores-Reyes, Arturo Garrocho-Rangel, Takashi Komabayashi, Aniket S. Wadajkar, Amaury J. Pozos-Guillén

Dental Medicine Faculty Publications

Calcium hydroxide (Ca(OH)2) loaded poly(DL-lactide-co-glycolide) acid (PLGA) microspheres (MS) might be employed for apexification requiring a sustained release of Ca++. The aim of this study was to formulate and characterize Ca(OH)2-PLGA-MS. The Ca(OH)2-loaded MS were prepared by either oil-in-water (O/W) or water-in-oil/in-water (W/O/W) emulsion solvent evaporation technique. MS produced by the O/W technique exhibited a larger diameter (18.63 ± 7.23 μm) than the MS produced by the W/O/W technique (15.25 ± 7.37 μm) (Mann Whitney U test P < 0.001). The Ca(OH)2 encapsulation efficiency and Ca++ release were calculated from data obtained by absorption techniques. Ca++ release profile was evaluated for 30 days. The percentage of encapsulation efficiency of the O/W-produced MS was higher (24%) than the corresponding percentage of the W/O/W-produced MS (11%). O/W- and W/O/W-produced MS released slower and lower Ca++ than a control Ca(OH)2 paste with polyethylene glycol 400 (ANOVA 1 way, Tukey HSD P < 0.01). O/W-produced MS released higher Ca++ than W/O/W-produced MS (statistically significant differences with t-Student test). We concluded that Ca(OH)2-PLGA-MS were successfully formulated; the technique of formulation influenced on the size, encapsulation efficiency and release profile. The MS were better sustained release system than the Ca(OH)2 paste.

First Steps Phase Iii Initiative: Improving Oral Health And Healthy Weight In Children Final Evaluation Report, Carolyn E. Gray Mph, Kimberley S. Fox Mpa

Population Health & Health Policy

This report summarizes evaluation findings from Phase III and assesses change in oral health and healthy weight screening rates, referrals and related office system procedures in participating practices. The report also highlights challenges encountered and lessons learned in implementing changes to office systems, in responding to state policy changes, and in collecting and tracking oral health and healthy weight measures at the practice-level to inform quality improvement.

Accuracy Of Linear Measurements In Stitched Versus Non-Stitched Cone Beam Ct Images, Preeyaporn Srimawong, Anchali Krisanachinda, Jira Chindasombatjaroen

Chulalongkorn University Dental Journal

Objective To assess the accuracy of linear measurements from stitched and non-stitched cone beam computed tomography (CBCT) images in comparison to direct measurements. Materials and methods Ten dry human mandibles were marked with gutta-percha at reference points to obtain five vertical and five horizontal distances. CBCT using stitching and non-stitching programs were performed. All distances on CBCT images obtained using stitching and non-stitching programs were measured and compared with direct measurements. The intraclass correlation coefficients (ICCs) were calculated. Results The intraobserver ICCs of direct measurements were 0.998 to 1.000, and those of measurements on both non-stitched and stitched CBCT images …

ผลของซีเมนต์ชั่วคราวชนิดไดแคลต่อค่ากําลัง แรงยืดเฉือนของเรซินซีเมนต์ 4 ชนิดกับเนื้อฟัน, ตุลย์ ศรีอัมพร, ชุติมา โฆษิตพันธวงศ์, นิยม ธํารงค์อนันต์สกุล

Chulalongkorn University Dental Journal

วัตถุประสงค์ เพื่อศึกษาผลของไดแคลต่อค่ากําลังแรงยึดเฉือนของเรซินซีเมนต์ 4 ชนิด วัสดุและวิธีการ ฟันกรามแท้ของมนุษย์จํานวน 120 ซี่ ตัดด้านบดเคี้ยวให้เนื้อฟันเผย แบ่งฟันโดยการสุ่มเป็น 3 กลุ่ม ๆ ละ 40 ปี กลุ่มที่ 1 คือไม่เคลือบไดแคลบนเนื้อฟัน (กลุ่มควบคุม) ส่วนกลุ่มที่ 2 และ 3 เคลือบไดแคลบน เนื้อฟันแล้วทิ้งไว้เป็นระยะเวลา 7 และ 28 วัน ตามลําดับ จากนั้นแต่ละกลุ่มยังแบ่งเป็น 4 กลุ่มย่อยกลุ่มละ 10 ปี ตามชนิดของเรซินซีเมนต์ที่ใช้ทดสอบ 4 ชนิด (วารีโอลิงค์เอ็น พานาเวียเอฟทู รีไลเอ็กซ์ยูสองร้อย และแม็กเซมอีลิต) กําจัดไดแค ออกหลังจากครบเวลาที่กําหนดยึดแท่งเรซินคอมโพสิตบนผิวเนื้อฟันด้วยเรซินซีเมนต์ นําชิ้นทดสอบ แช่ในน้ํากลั่นที่อุณหภูมิ 37 องศาเซลเซียส เป็นเวลา 24 ชั่วโมง ทดสอบหาค่ากําลังแรงยึดเฉือนโดยเครื่องทดสอบ สากล ด้วยความเร็วหัวกด 0.5 มิลลิเมตรต่อนาที วิเคราะห์ข้อมูลด้วยสถิติการวิเคราะห์ความแปรปรวนแบบสอง ทางและการเปรียบเทียบเชิงซ้อนชนิดทุกย์ที่ระดับความเชื่อมั่นร้อยละ 95 ตรวจสอบลักษณะความล้มเหลวของ การยึดติดบริเวณรอยแตกหักของชิ้นทดสอบด้วยกล้องจุลทรรศน์สเตอริโอไมโครสโคป และกล้องจุลทรรศน์ อิเล็กตรอนแบบส่องกราด ผลการศึกษา ค่ากําลังแรงยึดเฉือนของทุกกลุ่มที่ยึดด้วยวารีโอลิงค์เอ็นและพานาเวียเอฟทู ไม่มีความแตกต่างกัน อย่างมีนัยสําคัญทางสถิติ ชิ้นทดสอบทุกชิ้นของกลุ่มวารีโอลิงค์เอ็นและพานาเวียเอฟทูแสดงความล้มเหลว แบบผสม ส่วนกลุ่มไลเอ็กซ์ยูสองร้อยและแม็กเซมอีลิต พบว่าค่ากําลังแรงยึดเฉือนของกลุ่มที่สัมผัสไดแคลเป็น เวลา 7 วัน และ 28 วัน มีค่าต่ํากว่ากลุ่มที่ไม่สัมผัสใดแคลอย่างมีนัยสําคัญทางสถิติ แต่ค่ากําลังแรงยึดเฉือน ระหว่างกลุ่มที่สัมผัสไดแคลด้วยระยะเวลา 7 วัน และ 28 วัน ไม่มีความแตกต่างกันอย่างมีนัยสําคัญทางสถิติ ชิ้นทดสอบทุกชิ้นของกลุ่มไลเอ็กซ์ยูสองร้อยและแม็กเซมอีลิต แสดงความล้มเหลวแบบยึดไม่ติด เมื่อพิจารณา เฉพาะกลุ่มที่เนื้อฟันสัมผัสสารได้แคล พบว่ากลุ่มไลเอ็กซ์ยูสองร้อยและแม็กเซมอีลิตมีค่ากําลังแรงยึดเฉือนต่ํากว่า กลุ่มวารีโอลิงค์เอ็นและพานาเวียเอฟทอย่างมีนัยสําคัญทางสถิติ สรุป ได้แคลมีผลต่อค่ากําลังแรงยึดเฉือนต่อเนื้อฟันในกลุ่มที่ยึดด้วยรึไลเอ็กซ์ยูสองร้อยหรือแม็กเซมอีลิต แต่ไม่มีผลต่อค่ากําลังแรงยึดเฉือนในกลุ่มที่ยึดด้วยวาริโอลิงค์เอ็นหรือพานาเวียเอฟทู

ผลของกรดฟอสฟอริกต่อความแข็งแรงดึงระดับจุลภาคระหว่างเดือยฟันไดเมทาคริเลตเสริมเส้นใยกับวัสดุก่อแกนฟันเรซินคอมโพสิต, ศริยา เสารยะ, วัชรศักดิ์ ตุมราศวิน, ศิริพร อรุณประดิษฐ์กุล

Chulalongkorn University Dental Journal

วัตถุประสงค์ เพื่อประเมินค่าความแข็งแรงดึงระดับจุลภาคระหว่างเดือยฟันไดเมทาคริเลตเสริมเส้นใยกับวัสดุก่อแกน ฟันเรซินคอมโพสิต หลังจากปรับสภาพผิวเดือยฟันด้วยกรดฟอสฟอริกตามด้วยการทาไซเลนและ/หรือสารบอนด์ดึง วัสดุและวิธีการ เดือยฟันยี่ห้อเอฟอาร์ซี โพสต์เทค พลัส จํานวน 30 แท่ง แบ่งออกเป็น 6 กลุ่ม โดยทาพื้นผิว เดือยฟันด้วย กลุ่มที่ 1 ไซเลน กลุ่มที่ 2 สารบอนด์ดึง และกลุ่มที่ 3 ไซเลนและสารบอนด์ดึง ส่วนกลุ่มที่ 4-6 ปรับ สภาพผิวเดือยฟันด้วยกรดฟอสฟอริกความเข้มข้นร้อยละ 37 นาน 1 นาที แล้วทาพื้นผิวเดือยฟันด้วยไซเลน (กลุ่มที่ 4) สารบอนด์ดึง (กลุ่มที่ 5) ไซเลนและสารบอนด์ดึง (กลุ่มที่ 6) วางเดือยฟันที่ปรับสภาพผิวแล้วกลางท่อพลาสติกใส แล้วฉีดมัลติคอร์โฟลว์เข้าไปในท่อพลาสติกและฉายแสง นําชิ้นเดือยฟัน-แกนฟันมาตัดเป็นชิ้นทดสอบรูปแท่ง จํานวน 20 ชิ้นต่อกลุ่ม เพื่อทดสอบค่าความแข็งแรงดึงระดับจุลภาค จําแนกความล้มเหลวของชิ้นทดสอบด้วยกล้อง สเตอริโอไมโครสโคป (40 เท่า) วิเคราะห์ผลด้วยสถิติความแปรปรวนสองทางและวิเคราะห์ความแตกต่างระหว่าง กลุ่มด้วยสถิติ ดันเนท ที่สาม ที่ระดับนัยสําคัญทางสถิติ 0.05 (p<0.05) ผลการศึกษา การปรับสภาพผิวเดือยฟันด้วยกรดฟอสฟอริกตามด้วยการทาไซเลนและสารบอนด์ดิงให้ค่าความแข็งแรงดึงระดับจุลภาคสูงสุดอย่างมีนัยสําคัญ ส่วนการทาไซเลนโดยไม่ได้ปรับสภาพผิวเดือยฟันด้วยกรด ฟอสฟอริกให้ค่าความแข็งแรงดึงระดับจุลภาคต่ําสุดอย่างมีนัยสําคัญและเกิดความล้มเหลวชนิดยึดไม่อยู่ ในขณะที่ ชิ้นทดสอบส่วนใหญ่ในกลุ่มอื่น ๆ เกิดความล้มเหลวชนิดเชื่อมแน่นล้มเหลวในเดือยฟัน สรุป การปรับสภาพผิวเดือยฟันด้วยกรดฟอสฟอริกความเข้มข้นร้อยละ 37 นาน 1 นาที ตามด้วยการทาไซเลน และ/หรือสารบอนด์ดิ้ง สามารถเพิ่มความแข็งแรงดึงระดับจุลภาคระหว่างเดือยฟันไดเมทาคริเลตเสริมเส้นใยกับ วัสดุก่อแกนฟันเรซินคอมโพสิต (2 ทันต จุฬาฯ 2558:38:155-164)