- ICH GCP
- Реестр клинических исследований США
- Клиническое испытание NCT07740889
Effect of Nail Biting Habit on Mandibular Bone Structure: A Retrospective Radiological Study
Evaluation of the Effects of Nail Biting Habit on Mandibular Bone Structure Using Fractal Analysis and Panoramic Morphometric Indices: A Retrospective Radiological Study
Обзор исследования
Статус
Условия
Подробное описание
Nail biting (onychophagia) is classified as a body-focused repetitive behavior and represents a common parafunctional habit, particularly among children and adolescents. Continuous repetitive mechanical forces generated during nail biting may affect the stomatognathic system; however, the possible effects of this habit on mandibular bone structure have not been sufficiently investigated.
Fractal analysis is a radiological assessment method used to evaluate trabecular bone architecture by quantifying structural complexity. Higher fractal dimension values indicate increased complexity of bone patterns. In addition, panoramic morphometric indices such as mandibular cortical width, panoramic mandibular index, and Klemetti index provide information regarding cortical bone quality and quantity.
In this retrospective case-control study, existing panoramic radiographs of individuals with and without nail biting habits will be evaluated. Radiological parameters including fractal dimension, mandibular cortical width, panoramic mandibular index, and Klemetti index will be compared between groups. This study aims to determine whether nail biting habit is associated with measurable changes in mandibular trabecular and cortical bone characteristics.
Тип исследования
Регистрация (Оцененный)
Контакты и местонахождение
Контакты исследования
- Имя: dilara nil günaçar
- Номер телефона: +905412940104
- Электронная почта: dilaranil.tomrukcu@erdogan.edu.tr
Критерии участия
Критерии приемлемости
Возраст, подходящий для обучения
- Ребенок
Принимает здоровых добровольцев
Метод выборки
Исследуемая популяция
Описание
Inclusion Criteria:
- Children aged 8-10 years who were examined at the Department of Pediatric Dentistry, Faculty of Dentistry, Recep Tayyip Erdoğan University.
- Systemically healthy participants.
- Participants with available diagnostic-quality panoramic radiographs obtained during routine dental examinations.
- Participants with and without a history of nail biting habit.
- Panoramic radiographs with sufficient image quality for fractal dimension analysis and mandibular morphometric measurements.
- Radiographs without periapical pathology in teeth adjacent to the regions of interest (ROI) used for fractal analysis.
- Participants with at least 20 existing teeth.
- Radiographic records with available parental radiographic information and consent documentation.
Exclusion Criteria:
- Participants with systemic diseases or conditions that may affect bone metabolism, including diabetes mellitus, osteoporosis, osteomalacia, renal diseases, hypothyroidism, or hyperparathyroidism.
- Participants using medications that may influence bone density or bone metabolism.
- Participants with temporomandibular joint disorders affecting the subcondylar region.
- Participants with mandibular pathological conditions, including cysts, tumors, or other lesions affecting mandibular bone structure.
- Participants with periapical pathology adjacent to the regions selected for fractal analysis.
- Participants with fewer than 20 teeth.
- Panoramic radiographs with insufficient diagnostic quality or image artifacts that prevent reliable measurements.
- Radiographs that do not allow accurate evaluation of mandibular cortical and trabecular bone parameters.
Учебный план
Как устроено исследование?
Детали дизайна
Когорты и вмешательства
Группа / когорта |
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Nail Biting Habit Group
This cohort includes systemically healthy children aged 8-10 years with a documented nail biting habit.
Existing panoramic radiographs obtained during routine dental examinations will be retrospectively analyzed.
Mandibular trabecular bone structure will be evaluated using fractal dimension analysis, and cortical bone characteristics will be assessed using mandibular cortical width, panoramic mandibular index, and Klemetti index measurements.
No intervention will be performed.
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Control Group Without Nail Biting Habit
This cohort includes systemically healthy children aged 8-10 years without a history of nail biting habit.
Existing panoramic radiographs obtained during routine dental examinations will be retrospectively analyzed using the same radiological evaluation methods.
Mandibular trabecular and cortical bone characteristics will be compared with those of the nail biting habit group.
No intervention will be performed.
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Что измеряет исследование?
Первичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
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Mandibular Trabecular Bone Structure Assessed by Fractal Dimension Analysis
Временное ограничение: Baseline
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Mandibular trabecular bone architecture will be evaluated using fractal dimension analysis on panoramic radiographs.
Fractal dimension measurements will be performed using the box-counting method described by White and Rudolph.
Four regions of interest (ROIs) in the mandible will be analyzed, including the condylar subcortical region, supracortical region above the mandibular angle, area above the mandibular canal distal to the mental foramen, and anterior region of the mental foramen.
Measurements will be performed bilaterally, and the mean fractal dimension value will be calculated for each participant.
Higher fractal dimension values indicate greater trabecular bone complexity.
The fractal dimension values will be compared between individuals with and without nail biting habit.
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Baseline
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Вторичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
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Panoramic Mandibular Index (PMI)
Временное ограничение: Baseline
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The panoramic mandibular index (PMI) will be calculated on panoramic radiographs as the ratio of mandibular cortical width to the distance between the inferior border of the mandible and the inferior margin of the mental foramen.
Measurements will be performed bilaterally, and the mean value will be used for analysis.
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Baseline
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Соавторы и исследователи
Даты записи исследования
Изучение основных дат
Начало исследования (Оцененный)
Первичное завершение (Оцененный)
Завершение исследования (Оцененный)
Даты регистрации исследования
Первый отправленный
Впервые представлено, что соответствует критериям контроля качества
Первый опубликованный (Действительный)
Обновления учебных записей
Последнее опубликованное обновление (Действительный)
Последнее отправленное обновление, отвечающее критериям контроля качества
Последняя проверка
Дополнительная информация
Термины, связанные с этим исследованием
Дополнительные соответствующие термины MeSH
Другие идентификационные номера исследования
- 2026/315
Информация о лекарствах и устройствах, исследовательские документы
Изучает лекарственный продукт, регулируемый FDA США.
Изучает продукт устройства, регулируемый Управлением по санитарному надзору за качеством пищевых продуктов и медикаментов США.
Эта информация была получена непосредственно с веб-сайта clinicaltrials.gov без каких-либо изменений. Если у вас есть запросы на изменение, удаление или обновление сведений об исследовании, обращайтесь по адресу register@clinicaltrials.gov. Как только изменение будет реализовано на clinicaltrials.gov, оно будет автоматически обновлено и на нашем веб-сайте. .