https://he01.tci-thaijo.org/index.php/KDJ/issue/feed Khon Kaen University Dental Journal 2024-10-31T00:00:00+07:00 Aruntip Leemungkun larunt@kku.ac.th Open Journal Systems <p><strong>Khon Kaen University Dental Journal (Khon Kaen Dent J)</strong>, so called KDJ, is an official, peer-reviewed publication of Khon Kaen University Faculty of Dentistry. It is published since 1998, with our main goal to increasingly disseminate the advanced knowledge and technologies related to the field of dentistry in the northeastern region of Thailand. Consistent with our mission to deliberately deliver the scientific novelty towards regional dental professionals, we have successfully published more than 350 original articles including reviews under our KDJ editorial team. Remarkably, we have nowadays gained attention at the national level as we are currently indexed in Thai-Journal Citation Index Center (TCI) in which the journal is classified as TCI tier number 1 since 2015.</p> <p><strong>Scope of the Journal </strong>Khon Kaen Dent J aims at fostering the knowledge advancement of clinical dentistry, as well as basic dental sciences e.g. dental biomaterial sciences, oral biology and immunology in order to uplift the insights toward patient care. Of note, We presently accept a wide range of original research articles, case reports, review articles, and short communications under the double-blinded standard with a consistent publication quality. </p> <p><strong>Journal Abbreviation:</strong> Khon Kaen Dent J</p> <p><strong>Start year:</strong> 1998</p> <p><strong>Language:</strong> Thai, English</p> <p><strong>Publication fee:</strong> Free of charge</p> <p><strong>Issues per year:</strong> 3 issues (Jan-Apr, May-Aug, Sep-Dec)</p> <p><strong>ISSN:</strong> 2730-1699 (Online)</p> https://he01.tci-thaijo.org/index.php/KDJ/article/view/268741 Extraoral Maxillofacial Prosthesis Materials Part II: Polyurethane Elastomer 2024-04-12T22:07:50+07:00 Wisarut Prawatvatchara icesk125@gmail.com Visaluk Punyawattananon Visaluk.pun@gmail.com Pithiwat Uasuwan pithua@kku.ac.th Kwanwong Boonpitak kwanwong@tu.ac.th Atikom Surintanasarn atikom.s@chula.ac.th Suparaksa Yamockul nienee23@gmail.com <p>Polyurethane was also employed in its production. However, there were several disadvantages to this type of material, therefore it lost its popularity. Despite having a higher tear resistance than silicone elastomer, it is still exclusively utilized for lining silicone prostheses. Although silicone materials are more widely used than other materials for the reconstruction of maxillofacial prostheses, there are many unfavorable issues that arise after use, like discoloration and degradation. Thus, the study of material characteristics and behavior is necessary to fabricate prostheses for patients with the best possible outcome.</p> 2024-10-31T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/270590 Subcutaneous Emphysema Suddenly after Restorative Dental Treatment: A Case Report 2024-06-24T16:06:05+07:00 Supaporn Viriyajirakul muoyomfs@hotmail.com <p>Subcutaneous emphysema after dental treatment is a rare complication and spontaneous recovery. However, some reports have found that the consequences were serious and life-threatening complications. In dentistry, it may appear with the use of air-driven handpieces during tooth extraction, tooth separation with a raised mucosal flap, the use of gingival retraction cords, and using air-water syringe push air into the periodontal tissue. Therefore, understanding the pathophysiology of subcutaneous emphysema, early diagnosis, and prompt treatment will be a good prevention of complications. This report presents a rare occurrence of subcutaneous emphysema delivery of a class V dental restoration with a retraction cord in an upper left second molar. The tissue swelling was presented suddenly from the left infraorbital area to the left submandibular area. The expected clinical course, physical examination, diagnostic features, and treatment were discussed for the prevention of a severe complication</p> 2024-10-31T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/270362 Factors Associated with The Revision of Alveolar Bone Grafting Using Iliac Crest Bone Grafts in Patients with Cleft Lip and Palate 2024-07-11T15:50:58+07:00 Supon Kamkaew supon.k@kkumail.com Wilawan Weraarchakul wilwee@kku.ac.th Pipop Sutthiprapaporn spipop@kku.ac.th Siripong Sittisomwong siripong.omfskku@gmail.com <p>Alveolar bone grafting with iliac crest bone grafts is a common corrective procedure for maxillary abnormalities in patients with cleft lip and palate. Despite its widespread use, the need for surgical revisions persists. This retrospective case-control study analyzed data from the past 12 years (2010-2021), including 30 cases requiring revision and 30 controls without such need. We examined the influence of gender, presence of oronasal fistulas, and alveolar cleft characteristics-specifically, the type and size of the cleft. Measurements were taken at three anatomic levels: cervical, middle, and apex of the tooth root, using intraoral radiographs. Results from multiple logistic regression analysis, controlling for confounding variables, showed statistically significant associations (p&lt;0.05) with the need for revision. Notably, females were 4.82 times more likely than males to require revision (95% CI: 1.06–21.85), and the presence of an oronasal fistula increased the likelihood of repeat surgery by 8.14 times (95% CI: 1.86-35.59). Furthermore, each millimeter increase in the size of the alveolar cleft at the root apex was associated with a 1.62 times higher chance of requiring additional surgery (95% CI: 1.14-2.32). These findings underscore the importance of meticulous patient preparation and targeted surgical planning to address oronasal fistulas and cleft size, necessitating close collaboration among surgeons and orthodontists to reduce the frequency of revisions and improve post-operative outcomes.</p> 2024-10-31T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/266846 Factors Related to The Severity of Persistent Hypoesthesia after Bilateral Sagittal Split Ramus Osteotomy 2024-08-06T09:00:31+07:00 Trintree Udomsin tarntrin@gmail.com Rajda Chaichit rajnoi@kku.ac.th Saowaluck Limmonthol saolim@kku.ac.th <p>Bilateral Sagittal Split Ramus Osteotomy (BSSRO) is a widely used surgical procedure for correcting mandibular deformities, often resulting in a common post-operative complication: persistent hypoesthesia in the lower lip and chin. This study aimed to identify factors that related to the severity of this hypoesthesia post-BSSRO. We retrospectively analyzed treatment records of 33 patients who underwent BSSRO at an Oral and Maxillofacial Surgery clinic between October 2019 and October 2021. Neurosensory disturbance was assessed using a visual analog scale (VAS), and neurosensory function was objectively tested with 5-piece Semmes-Weinstein monofilaments on the lower lip and chin. Results indicated that the duration of post-operative follow-up was significantly associated with the severity of persistent hypoesthesia (P= 0.027). Moreover, intraoperative nerve encounter on the left side significantly related to the severity of symptoms, particularly in patients with normal to mild neurosensory disturbance (P = 0.014). The study concludes that extended post-operative follow-up, avoidance of intraoperative nerve exposure, and the expertise of the surgeon are key factors in reducing the severity of persistent hypoesthesia following BSSRO.</p> 2024-10-31T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/268617 A Study of Development of Dental Practicum Course Provision for Students in Doctor of Dental Surgery Program 2024-08-30T17:31:46+07:00 Paphaon Kheawseema paphaonkk@gmail.com Pornpat Theerasopon pornpat.th@up.ac.th <p>This research aimed to study the current situation in the management of dental practicum courses and to identify the strategies for improving the management of dental practicum courses. The study group focused on the 3rd to 6th year dental students from the School of Dentistry, University of Phayao during the 2022 academic year who had enrolled and completed in dental practicum courses. 30 samples were voluntary included in this study with informed consent. The researchers collected data by focus group discussion during February to March, 2023, where participants were encouraged to freely express their experiences in accordance with guided discussions created by researchers. The data was then analyzed by reporting the strengths, weaknesses, opportunities and threats (SWOT analysis) and major issues were chosen for further analysis to fishbone diagrams and value chain diagrams. The results of this study were summarized that the course content is contemporary and globally applicable, supported by well-detailed manuals. Instructors are knowledgeable and specialized in their teaching topics, instructors from both full-time staffs and special instructors from other faculties provide diverse learning opportunities for students. The physical environment of the location is conducive for learning situation, and facilities such as equipment and laboratory staffs are efficient. Furthermore, the curriculum management system is up-to-date, utilizing electronic and online systems for communication and assessment. The findings of this study can be utilized to improve learning instruction by using up-to-date practical manuals, focus on the communication between learners and instructors during learning activity, ensure evenly distributed class schedules across academic years, and well-planned necessary equipment to procure suitable and cost-effective materials. These efforts will enhance the efficiency of teaching management and create long-term value.</p> 2024-10-31T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/271975 Masking Ability and Color Stability of Resin Composites with Different Layering Techniques on Discolored Tooth at Immediate Restoration and After Thermocycling 2024-09-28T16:16:51+07:00 Pithiwat Uasuwan pithua@kku.ac.th Rungsun Kanpachai imbom.titi@gmail.com Kirawut Luengtrakoon kiralu@kku.ac.th Nutthapong Kantrong nutthapong.kan@mfu.ac.th Suchart Wongkhantee suchart1407@hotmail.com <p style="font-weight: 400;">The purpose of this study was to evaluate the masking ability and color stability of resin composites, restored with various layering techniques on discolored tooth at immediate restoration and after thermal aging. For the materials and methods, three hundred and forty disc-shaped specimens of dentin shade and enamel shade of four brands of resin composite included Filtek Z350 XT, Harmonize, Ceram X Duo, and Estelite 𝚺 Quick were prepared with five layering thicknesses in millimeters (n=17) as followed (Dentin thickness/Enamel thickness); 0.3/0.3, 0.4/0.4, 0.5/0.3, 0.5/0.5 and 0.7/0.3. The masking ability was interpreted through the color difference of resin composites on A4-shade tooth background at immediate restoration (∆E<sub>T0</sub>) and after thermocycling (∆E<sub>T1</sub>), and the color stability of specimens was measured on A1-shade inherent color background (∆E<sub>A1</sub>) using CIELab coordinates obtained from a spectrophotometer. Thermocycling was performed at 5<sup> o</sup>C and 55<sup>o</sup>C in distilled water for 5,000 cycles. Kruskal-Wallis test and Dunn’s Bonferroni post hoc test, and Wilcoxon matched-pairs signed rank test were used to determine the significant difference of color difference (p&lt;0.05). The results showed that the median color difference of the layered specimens<strong> (</strong>∆E<sub>T0</sub>, ∆E<sub>T1</sub>, and ∆E<sub>A1</sub><strong>) </strong>were as follow; Filtek Z350 XT<strong> (</strong>1<strong>.</strong>52<strong>-</strong>2<strong>.</strong>00, 1<strong>.</strong>40<strong>-</strong>1<strong>.</strong>87, and 0<strong>.</strong>94<strong>)</strong>, Harmonize (2.19-5.82, 2.34-5.65, and 1.36), Ceram X Duo (1.26-2.65, 2.13-2.45, and 1.28) and Estelite 𝚺 Quick (3.80-7.70, 4.07-8.10, and 1.16). ∆E<sub>T0</sub> and ∆E<sub>T1</sub> were significantly different amongst resin composites with layering technique. Moreover, thermocycling significantly affected to the masking ability and the resin composite brands affected to the color stability (∆E<sub>A1</sub><strong>)</strong> after thermocycling in some layering thicknesses (p&lt;0.05). In conclusion, all resin composite brands demonstrated higher masking ability when increasing the thickness except for Filtek Z350 XT. A minimum 0.6 mm thickness of Filtek Z350 XT and Ceram X Duo, and 1.0 mm of Harmonize can mask the discolored tooth, whereas Estelite 𝚺 Quick showed unacceptable masking ability at all thicknesses. The color stability of all resin composites was clinically acceptable. Filtek Z350 XT showed the highest color stability.</p> 2024-10-31T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/272294 Dental Specialists’ Perspectives on Holistic Care 2024-08-28T15:11:08+07:00 Watanya Kwangvittayanon wk.scarlet@gmail.com Naiyana Buranachad Naiyana.boo@mahidol.edu <p>Dental patient care is being provided in specialized branches. A specialized perspective is being challenged by holistic patient care, which emphasizes the importance of caring for patients in various dimensions and whole-person care. The dental specialists assigned to teach students in programs related to holistic patient care will have an experience of a specialized perspective and a holistic perspective. Therefore, the expertise of this group of dentists is valuable in promoting a more comprehensive understanding of the holistic approach. The objective of this study was to find the meaning and perspective of holistic care through the experiences of dental specialists. Qualitative research was employed. Data was gathered through in-depth interviews with groups of dental specialists who have completed postgraduate studies in various programs and teach students in holistic dentistry programs. A purposive sampling technique was used to select a sample of eleven participants. Data analysis was done following a thematic analysis. The results showed that patient-centered care, humanized care, and medical ethics were the three definitions of holistic care provided by dental specialists. The significance found links to multiple aspects of holistic health, including physical, mental, emotional, social, and spiritual. Furthermore, the finding showed the transition from a specialized perspective to a holistic perspective through 1. gaining patient care experience. 2. seeing other people's patient care models. 3. getting gratification from beneficial treatment outcomes and patients' delight. The accessory factor includes working in a patient-centered care environment. In conclusion, holistic care can be achieved when dentists develop an understanding of the medical humanities perspective, gain experience in patient care, and practice self-reflection. As a result, dentists will recognize their worth and find fulfillment in their work, as well as be able to provide the most benefit to patients in terms of success and enjoyment from obtaining quality care.</p> 2024-12-04T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/272237 Water Sorption, Solubility and Surface Properties of CAD-CAM Materials 2024-09-12T10:29:52+07:00 Chatchalanya Wansudon chatchalanya@gmail.com Rebecca Kraivixien Rk5g@icloud.com Sirivimol Srisawasdi sirivimol6415@gmail.com <p>The purpose of this research was to examine water sorption, solubility, and surface properties of three widely used CAD-CAM materials: resin composite (Cerasmart; CS), polymer-infiltrated ceramic network (Vita Enamic; VE) and lithium disilicate glass ceramic (IPS e.max CAD; LS). Therefore, 45 rectangular-shaped specimens were prepared and immersed in deionized water for varying durations at 7 days, 1 month and 6 months. These specimens were then subjected to a range of tests, including water sorption, solubility, hardness and roughness. The result showed that immersion time significantly impacted water sorption among tested materials (p&lt;0.001). However, there were no significant differences in solubility between materials at each time point of the water immersion process (p&gt;0.05). The 2-way ANCOVA revealed that water immersions had significant effects on hardness among tested CAD-CAM blocks (p&lt;0.001), while there were no significant differences on roughness (p&gt;0.05). Moreover, the study found that there were no significant differences on roughness within IPS e.max CAD group at every time point (p&gt;0.05), while Cerasmart exhibited a similar trend compared to Vita Enamic, where surface properties showed significant differences among 7 days and 6 months of water immersions (p&lt;0.05). The correlation analysis showed statistically significant differences between water sorption and hardness, water sorption and roughness (p&lt;0.001). Overall, assessment of IPS e.max CAD, Vita Enamic, and Cerasmart, exhibited different levels of water sorption when subjected to prolonged water immersion for up to 6 months. Both aged and unaged specimens of these materials showed similar sorption and solubility during immersion process. However, water sorption influenced their hardness and roughness after immersion. Although these materials displayed varying degrees of water sorption, hardness, and roughness, they did not exhibit significant differences in solubility after 6 months of water immersion.</p> 2024-12-06T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/271401 Treatment Outcome and Prognostic Factors of Initial Root Canal Treatment Performed by Undergraduate Dental Students: A Retrospective Study 2024-09-13T13:23:32+07:00 Wannarat Booranapanich wannaratboo@gmail.com Sittichoke Osiri sittichoke.osi@mahidol.ac.th Lalida Ongchavalit lalida.ongchavalit@gmail.com <p>This study aimed to evaluate the outcomes and survival rates of initial root canal treatments performed by undergraduate dental students at the Faculty of Dentistry, Mahidol University. Additionally, this study aimed to identify prognostic factors influencing the treatment outcome and survival rate. A total of 1,768 teeth treated between 2015 and 2018 were analyzed, with 406 teeth included in the survival analysis and 397 teeth in the treatment outcome analysis. Clinical and radiographic data were collected, and descriptive statistics were used to report treatment outcomes and survival rates. Multivariable logistic regression and multivariable Cox regression were used to identify significant factors. The median follow-up time was 2.6 years. The overall healing rate was 82.1% (326 out of 397 teeth). Multivariable analysis revealed five significant factors negatively impacting the outcome, which included being male (OR=2.698), presence of a sinus opening (OR=2.641), pre-operative radiolucency (OR=3.620 and 5.991 for size &lt;5 mm and <u>&gt;</u>5 mm, respectively), inadequate root canal filling quality (OR=2.964), and inadequate restoration quality (OR=9.417). The survival rate was 97.8% (397 out of 406 teeth), with the only significant factor affecting the survival rate being cracked teeth (OR=16.067). The survival from fracture rate was 95.8%, with four significant factors found to negatively impact this rate: mandibular teeth (HR=5.653), teeth that lost more than two surfaces (HR=4.895), intra-operative complications (HR=8.049), and teeth that did not receive definitive restoration (HR=13.777). The majority of fractured teeth did not receive definitive restoration, and most incidence were fractured within 3.3 years (40 months). In conclusion, the healing rate of initial root canal treatment performed by undergraduate dental students at the Faculty of Dentistry, Mahidol University was 82.1%. Male gender, presence of a sinus opening, pre-operative radiolucency, inadequate root canal filling quality, and inadequate restoration quality were significant prognostic factors for the healed rate. The survival rate was 97.8%, with cracked teeth being the only significant factor negatively impacting the survival rate.</p> 2024-12-11T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal https://he01.tci-thaijo.org/index.php/KDJ/article/view/268253 Boundary of Mylohyoid Nerve Block: A Clinical Trial study 2024-06-27T11:48:23+07:00 Dheeratt Chengprapakorn dheeratt@kku.ac.th Kittisak Kanyapan kittisak.ka@sut.ac.th Nitipat Ruangtananurak mthrdp106@gmail.com Mathurada Phonphalert tabam_1818@hotmail.com Rajda Chaijit rajnoi@kku.ac.th Saowaluck Limmonthol limmonthol@hotmail.com <p>Mylohyoid nerve block is a useful injection technique, especially for the operation at the posterior mandible. However, the exact boundary of anesthesia has not been reported. The objective of this study is to study the anesthetized area of the teeth and soft tissues after mylohyoid nerve block injection. Thirty volunteers received mylohyoid nerve block which the side of the injection was retrieved by a simple random sampling method. Thereafter, the pulpal anesthesia of the mandibular teeth was determined with Electric Pulp Tester (EPT) along with the numbness testing of the gingival sulcus, alveolar mucosa, middle area of the floor of mouth, buccal mucosa and tongue by using a Florida probe and asking the volunteers about the numbness in the area of lower lip and chin. The measurements were repeatedly at 5, 10, 15 minutes. The results revealed that complete pulpal anesthesia of the mandibular second molar was 20%, mandibular first molar and mandibular second premolar were equally 3.33%. In addition, the incidence of complete numbness of soft tissue (the area in which the volunteers were 100% completely anesthetized) was the lingual gingival sulcus of mandibular first molar, lingual alveolar mucosa from mandibular second premolar to second molar and tongue respectively. Secondly, the area where complete anesthesia was greater than or equal to 80% but less than 100% consisted of the lingual gingival sulcus of the mandibular second molar, lingual alveolar mucosa from the mandibular first premolar and floor of mouth. The incidence of lower lip and chin numbness has not been found. In conclusion, the mylohyoid nerve block technique has completely anesthetized the area of the mandibular second molar mostly, followed by the mandibular first molar and mandibular second premolar respectively and caused complete numbness (100%) at the lingual gingival sulcus of the mandibular first molar, lingual alveolar mucosa from the mandibular second premolar to second molar and tongue. Furthermore, extra-oral tissue numbness has not been detected.</p> 2024-12-17T00:00:00+07:00 Copyright (c) 2024 Khon Kaen University Dental Journal