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ISSN : 0376-4672
Purpose: The purpose of this study was to validate the newly proposed periodontal disease index "PerioQuotient (PQ)" based on a periodontal disease symptoms questionnaire developed by brainstorming and the Delphi method by the 32nd Executive Committee of the Korean Academy of Periodontology. Materials and Methods: A total of 135 subjects were recruited. Age, gender, and clinical indices of periodontal disease were measured. Periodontitis stage was determined, and an 18-question questionnaire was administered. The internal consistency and validity of the questionnaire were examined using Cronbach's alpha and principal component analysis. Receiver operating characteristic (ROC) analysis, area under the curve (AUC), sensitivity, and specificity were investigated to assess the diagnostic test performance of the questionnaire. Results: The mean age of the 135 subjects was 48.8 ± 17.1 years (male 77 (57.0%), female 58 (43.0%)). The average response to the 18 questions was 7.4 ± 3.1. Reliability testing of the PQ-18 showed that the Cronbach's alpha was 0.68. The original PQ-18 had an AUC of 0.806 (95% CI: 0.709-0.903). Sensitivity was 0.76, and specificity was 0.77. Applying weighting factors according to Firth’s logistic regression analysis to the answers increased the AUC to 0.964 (95% CI: 0.934-0.993). Sensitivity was 0.893, and specificity of 1.0 was achieved. Conclusion: The PQ-17, excluding Question 15 ("No scaling for two years"), was shown a valid and reliable tool for the diagnosis of periodontitis. The PQ index presented in this study achieved high sensitivity, specificity, and AUC, suggesting its potential use as a diagnostic tool for periodontal disease status assessment. (J Korean Dent Assoc 2026; 64(6): 185-191)
Chronic diffuse sclerosing osteomyelitis is a rare, non-suppurative mandibular inflammatory disease with recur rent pain and swelling and no standardized treatment guidelines. This report described a 13-year-old girl with left mandibular chronic diffuse sclerosing osteomyelitis who achieved clinical and radiologic remission after a three-day intravenous pamidronate regimen (0.5 mg/kg on day 1 and 1.0 mg/kg on days 2–3, up to 30 mg/day) and favorable bone remodeling on follow-up imaging. These findings indicate that pamidronate may be an ef fective and safe therapeutic option for pediatric chronic diffuse sclerosing osteomyelitis, with bone turnover markers serving as useful adjunct indicators of treatment response. (J Korean Dent Assoc 2026; 64(6): 192-197)
Universal adhesives have been widely adopted in restorative dentistry due to their versatility and simplified clinical procedures. Unlike conventional adhesive systems, they can be applied using different etching strategies, including etch-and-rinse, self-etch, and selective enamel etch techniques. While this flexibility offers significant clinical advantages, it also requires clinicians to make appropriate decisions based on specific clinical situations. The purpose of this article is to provide practical guidelines for the effective use of universal adhesives in daily clinical practice. Within the limitations of simplified clinical protocols, universal adhesives should not be re garded merely as convenient materials but as technique-sensitive systems that require proper understanding and application. Careful selection of bonding strategies and meticulous adherence to clinical procedures are essential for achieving predictable and durable outcomes. (J Korean Dent Assoc 2026; 64(6): 198-203)
With advances in resin cements and the introduction of various functional monomers, esthetic indirect restora tions have gradually shifted toward a bonding-based concept. These changes, along with the concept of minimally invasive dentistry, has made it possible to reduce unnecessary tooth reduction for mechanical retention and to design restorations that rely more on adhesion. Bonding of indirect esthetic restorations creates multiple inter faces among the restoration, cement, and tooth structure and depending on the type of restorative material and cement used, different clinical approaches and surface treatment strategies are required. Therefore, the success of indirect aesthetic restoration depends on an accurate understanding of each interface and the application of appropriate clinical techniques. In this report, clinical procedures for successful bonding of indirect restorations using various esthetic restorative materials will be introduced. (J Korean Dent Assoc 2026; 64(6): 204-210)
As South Korea entered a super-aged society in 2025, the growing elderly population has brought increasing attention to the significance of oral aging. Oral aging encompasses far more than simple tooth loss; it involves a complex array of physiological changes, including decreased salivary secretion, atrophy of the oral mucosa, deterioration of periodontal tissues, and decline in masticatory function. These oral changes are closely associ ated with systemic health outcomes such as nutritional imbalance, cardiovascular disease, and cognitive decline. This article reviews the clinical characteristics of oral diseases commonly encountered in the elderly, with par ticular emphasis on the diagnostic and therapeutic approaches to root caries and cracked teeth. In addition, the principles of periodic recall examination, oral hygiene instruction, and patient counseling are presented from a maintenance therapy perspective. Finally, policy recommendations are proposed to strengthen institutional support for improving oral health in older adults. A thorough understanding of the oral characteristics of elderly patients and the commitment to prevention-centered care by clinicians will serve as the foundation for realizing healthy oral aging of the oral cavity. (J Korean Dent Assoc 2026; 64(6): 211-222)
