{"title":"Establishing reference values for maximum occlusal force in Japanese children using an individual-tooth-type capacitive pressure distribution sensor","authors":"Takashi Kuroki , Kaori Ishii , Yusuke Suzuki , Sho Kuroe , Julie Miyazaki , Satoshi Murata , Haruka Koyama , Risa Matsumoto , Naoya Antsuki , Kosuke Heki , Kentaro Igarashi , Hirohiko Hirano , Takashi Ogihara , Tomonori Hoshino , Takehiko Shimizu , Kazumasa Morikawa , Shinichi Negishi","doi":"10.1016/j.pdj.2025.100352","DOIUrl":"10.1016/j.pdj.2025.100352","url":null,"abstract":"<div><h3>Introduction</h3><div>Assessing oral function during growth is vital for evaluating the dental arch and jawbone development. Occlusal force assessment, along with tongue pressure, is part of the criteria for diagnosing “oral functional development disorder.” However, reference values for these evaluations are lacking, highlighting the need for standardized values during growth. Therefore, we aimed to create age-specific reference values for the maximum occlusal force in Japanese elementary school children with a newly developed individual-tooth capacitive pressure distribution sensor.</div></div><div><h3>Materials and methods</h3><div>This cross-sectional survey involved 383 children (175 boys and 208 girls) from all grades in an elementary school in Chiba Prefecture, Japan. A single-tooth capacitive pressure distribution sensor was used to measure maximum occlusal force, which was then compared to the Occlusal Force Meter GM10. Measurements were taken of the first permanent molar or second primary molar if the first molar had not erupted. The average of three trials per side was calculated for each participant.</div></div><div><h3>Results</h3><div>The results showed that boys exhibited greater occlusal force than girls. Furthermore, the transition of occlusal force from first to sixth grade followed a two-phase S-shaped pattern, reflecting physiological growth factors such as first molar eruption and root development, followed by the lateral tooth exchange period with second primary molar exfoliation.</div></div><div><h3>Conclusion</h3><div>The maximum occlusal force increases nonlinearly during childhood and varies by sex. The new sensor exhibited strong correlation with traditional measurement devices. These results can help set reference values that can aid in diagnosing oral functional developmental disorders in children.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 3","pages":"Article 100352"},"PeriodicalIF":0.6,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hayat Alghutaimel , Adeeb Alnajashi , Meshaal Alahmari , Sultan Alshamrani , Zaid Alonazi , Hasan Jamal
{"title":"Demographic and socioeconomic determinants of maternal knowledge and confidence in promoting infant and toddler oral health: An exploratory study","authors":"Hayat Alghutaimel , Adeeb Alnajashi , Meshaal Alahmari , Sultan Alshamrani , Zaid Alonazi , Hasan Jamal","doi":"10.1016/j.pdj.2025.100351","DOIUrl":"10.1016/j.pdj.2025.100351","url":null,"abstract":"<div><h3>Introduction</h3><div>Infancy and toddlerhood are unique periods that lay the foundations for a child's oral health. Proper nutrition, feeding practices, and oral care habits during these periods influence oral and general health. The present study explores the effect of demographics, socioeconomic variables, health-related factors, and information sources on expectant mothers' knowledge and confidence in promoting infants' and toddlers' oral health (ITOH).</div></div><div><h3>Methods</h3><div>A questionnaire was used to identify participants’ ages, nationalities, education, employment, incomes, and previous motherhood experience. Availability of health insurance, access to healthcare, attitude toward visiting the dentist, attitude toward fluoride, and sources of ITOH information were also recorded. Ten questions on factors influencing ITOH were used to assess knowledge. Self-reported confidence was captured using a five-point scale.</div></div><div><h3>Results</h3><div>The results demonstrated limited awareness of ITOH evidence-based practices, particularly concerning breast- and bottle-feeding and fluoride exposure. Low knowledge levels were evident for young participants, first-time mothers, participants with low incomes, and those who reported negative opinions toward fluoride. Low confidence levels were evident for young participants, first-time mothers, and those who had no formal education. Dentists emerged as the most reliable source of information, correlating with higher maternal knowledge than web searches and social media.</div></div><div><h3>Conclusion</h3><div>Socioeconomic factors, particularly household income and previous motherhood experience, are significant determinants of maternal ITOH knowledge and confidence levels, in addition to demographic variables, such as age and education level. The findings underscore the need for targeted educational interventions and call for efforts to establish public access to reliable information sources on child oral health.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 2","pages":"Article 100351"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A difficult case of treatment for lower lip bite wound in Moebius syndrome: A case report","authors":"Megumi Sawaguchi, Shohei Oshima, Yasutaka Yawaka","doi":"10.1016/j.pdj.2025.100349","DOIUrl":"10.1016/j.pdj.2025.100349","url":null,"abstract":"<div><div>Moebius syndrome (MS) is a rare, non-progressive, congenital neuromuscular disease that affects the oral and maxillofacial region. MS is characterized by bilateral or unilateral palsy of the abducens and facial nerves, specifically cranial nerves VI and VII. Orofacial manifestations include facial weakness, a hypoplastic upper lip, microstomia, dropping corners of the mouth, mandibular hypoplasia, a high-arched palate, tongue malformation, and an open bite.</div><div>Here, we present a case of repeated lower lip bite wounds in a patient with MS. In addition, severe luxation of a primary tooth, self-inflicted palate injuries, and tongue-bite wounds were observed. However, this case was particularly difficult to treat. Despite the diverse oral features reported in Moebius syndrome, oral trauma due to self-injury is rare.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 2","pages":"Article 100349"},"PeriodicalIF":0.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of a device for measuring bite force on individual teeth using a capacitive surface pressure distribution sensor","authors":"Takashi Ogihara , Yota Kokubo , Kosuke Heki , Kentaro Igarashi , Hirohiko Hirano , Kaori Ishii , Shinichi Negishi , Takehiko Shimizu , Kazumasa Morikawa , Tomonori Hoshino","doi":"10.1016/j.pdj.2025.100348","DOIUrl":"10.1016/j.pdj.2025.100348","url":null,"abstract":"<div><h3>Introduction</h3><div>Measuring the bite force of the full jaw in pediatric patients is challenging due to the changing occlusal relationships during the transition from deciduous to permanent teeth, and younger children often struggle to occlude their dental arch as instructed by the measurement sensor. Therefore, a practical approach is to use the measured occlusal pressure at the second primary or first permanent molar as the pediatric bite force.</div></div><div><h3>Materials and methods</h3><div>We applied a capacitive surface pressure distribution sensor, approximately 12 mm thick, and developed a device capable of measuring the bite force on individual teeth by detecting changes in capacitance. The accuracy of the results was examined by comparing them with the push-in load of the universal testing machine.</div></div><div><h3>Results</h3><div>The bite force values calculated from the output of the developed capacitive surface pressure distribution sensor showed a high correlation with the load values of the universal testing machine (R<sup>2</sup> = 0.99). The results of repeated measurements at a load of 500 N indicated that each measurement error remained within ±15 %, even after conducting 50 measurements.</div></div><div><h3>Conclusion</h3><div>The newly developed capacitive surface pressure distribution sensor can measure occlusal pressure in the second primary or first permanent molar, making it a useful tool for measuring bite forces at specific sites in clinical and epidemiological settings.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 2","pages":"Article 100348"},"PeriodicalIF":0.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bareera Iram, Akash Bhatnagar, Saman Seraj, Anchal Goel, Palak Mishra
{"title":"Interference in permanent tooth eruption: A case of lobular capillary hemangioma with retained primary molar","authors":"Bareera Iram, Akash Bhatnagar, Saman Seraj, Anchal Goel, Palak Mishra","doi":"10.1016/j.pdj.2025.100347","DOIUrl":"10.1016/j.pdj.2025.100347","url":null,"abstract":"<div><div>Pyogenic granuloma (PG) is a benign vascular lesion typically caused by trauma or chronic irritation. Although uncommon in pediatric patients, it can have significant implications for dental development. This report discusses the case of a 12-year-old girl presenting with a PG in the lower left back tooth region, obstructing the eruption of a permanent premolar. Surgical removal of the lesion successfully restored the normal eruption process without complications. This case highlights the critical importance of timely diagnosis and intervention to prevent developmental disruptions in pediatric dentistry.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 2","pages":"Article 100347"},"PeriodicalIF":0.6,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A case report on long-term management of trisomy 9p syndrome with severe delayed eruption","authors":"Kimiko Ueda , Yuki Akazawa , Hiroshi Nakagawa , Yoshihito Yamakawa , Yukari Suzuki , Tomonori Iwasaki","doi":"10.1016/j.pdj.2025.100344","DOIUrl":"10.1016/j.pdj.2025.100344","url":null,"abstract":"<div><h3>Background</h3><div>No long-term dental studies have been conducted on tooth eruption in patients with Trisomy 9p syndrome.</div></div><div><h3>Case presentation</h3><div>We report a case of a child with a duplication restricted to p24.3 of chromosome 9 and a severe delayed eruption of permanent teeth. Timely extraction of the deciduous teeth prevented the need for orthodontic treatment to address the impacted permanent teeth.</div></div><div><h3>Conclusion</h3><div>Achieving healthy dentition and occlusion can contribute to overall health, significantly enhancing the quality of life. Therefore, treatment strategies to allow the eruption of permanent teeth from an early age are crucial in this syndrome.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 2","pages":"Article 100344"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Successful eruption of maxillary bilateral central incisors following extraction of four supernumerary teeth in maxillary anterior region – Case report","authors":"Masatoshi Otsugu , Makoto Okuda , Fumikazu Tojo , Tamami Kadota , Masakazu Hamada , Rena Okawa , Kazuhiko Nakano","doi":"10.1016/j.pdj.2025.100346","DOIUrl":"10.1016/j.pdj.2025.100346","url":null,"abstract":"<div><h3>Background</h3><div>Three or more supernumerary teeth in a patient without a systemic disease is rarely encountered.</div></div><div><h3>Case presentation</h3><div>A Japanese boy aged 9 years 1 month was referred for a malformed tooth in the maxillary central region. Panoramic radiography and cone-beam computed tomography revealed four supernumerary teeth inhibiting eruption of the maxillary bilateral central incisors. Extraction of the supernumerary teeth and use of a fenestration technique led to successful eruption of both incisors.</div></div><div><h3>Conclusion</h3><div>A supernumerary tooth can strongly affect permanent dentition, thus early detection and appropriate management are important.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 2","pages":"Article 100346"},"PeriodicalIF":0.6,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relationship between childhood caries and social background: Regarding the novel emerged correlation between induced abortion and dental caries","authors":"Takafumi Nagao , Naoki Nakao , Masataka Nagao , Hiroko Oka , Ayumu Nakashima , Mitsuhiro Uchida , Ayumu Ito , Ryota Nomura , Kazuhiro Shimamura , Akira Namera , Takahiro Harada , Kazuhiro Murata , Kouki Hatori","doi":"10.1016/j.pdj.2025.100341","DOIUrl":"10.1016/j.pdj.2025.100341","url":null,"abstract":"<div><h3>Background</h3><div>In Japan, a universal health insurance coverage system has been established, and everyone has equal access to medical care. Therefore, Japan is often considered to have less disparity in living standards than other countries. However, there are few reports on a correlation between social class and health due to the image of fewer individual disparities.</div></div><div><h3>Aim</h3><div>This study aimed to investigate the association between childhood dental caries and socioeconomic background.</div></div><div><h3>Methods</h3><div>Using various government statistics sources, we examined the association between childhood dental caries and socioeconomic factors in Japan including the induced abortion rate and number of recognized criminal offenses as objective variables.</div><div>Four factors were selected as explanatory variables: monthly income per household, percentage of expenditure on other living expenses, number of penal-code offenses, and clearance rate of penal-code offenses. The induced abortion rates per 1000 women by age for prefectures or induced abortion rates per 1000 women aged 25–29 years for prefectures (‰) were correlated with the prevalence of dental caries in children as explanatory variables.</div></div><div><h3>Results</h3><div>This study demonstrated a significant effect (p<0.05) of induced abortion on increased childhood dental caries.</div></div><div><h3>Conclusion</h3><div>Our findings highlight the importance of dentists sharing medical knowledge about obstetrics and pediatrics with the community and other medical professionals through avenues such as community medicine and school health checkups.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 1","pages":"Article 100341"},"PeriodicalIF":0.6,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessment of salivary zinc level and its impact on periodontal health among children and adolescence with sickle cell anemia","authors":"Rogyia Hassan , Lamis Kaddam","doi":"10.1016/j.pdj.2025.100342","DOIUrl":"10.1016/j.pdj.2025.100342","url":null,"abstract":"<div><h3>Objectives</h3><div>Sickle cell anemia (SCA) is the most common inherited disorder around the world. Several studies revealed a low level of serum zinc among sickle patients. However, none of them investigated the impact of SCA on salivary zinc levels. This is the first conducted to measure zinc level in saliva and its influence on the periodontal health of children and adolescents with SCA.</div></div><div><h3>Results</h3><div>The mean ages in the sickle cell anemic group were 10.37 ± 4.13 years old, while the mean ages of subjects in the control group were 9.37 ± 3.6 years (P.Value: 0.169). Salivary zinc level was significantly lower among SCA patients (P.Value < 0.001) than control group. None of the participants were diagnosed with periodontitis. The salivary zinc level was significantly higher in SCA with standard pocket depth and no clinical attachment loss than patients diagnosed with gingivitis (P. value:0.025). Sickle patients have a low level of zinc in saliva, which may contribute to some manifestations of sickle cell disease and may make them more susceptible to periodontal disease in the future. We recommend conducting more research on oral and periodontal health among children affected with SCA to improve their quality of life.</div></div>","PeriodicalId":19977,"journal":{"name":"Pediatric Dental Journal","volume":"35 1","pages":"Article 100342"},"PeriodicalIF":0.6,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}