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High pain intensity is commonly experienced by patients with serious advanced illness. Impediments to improving pain intensity in home hospice include poor adherence to a pain management regimen due to caregivers' lack of knowledge and self-efficacy (confidence) in administering analgesics. e-PainSupport is a self-administered, digital application directly linked to patients' medical records. It has three elements: Education Module, Patient Pain Record, and the Pain Summary for Nurses. This study will test the effects of e-PainSupport on pain intensity when used by patients, caregivers, and nurses. The study's specific aims are as follows: Aim 1, compare the effects of e-PainSupport to a standard care condition, controlling for covariates (role [patient or caregiver], age, sex, ethnicity, education, and patient's diagnosis), on clinical improvement in pain intensity (primary outcome) and significant improvement on a pain intensity scale (secondary outcome); Aim 2, examine the mediating effects of patient and caregiver knowledge, self-efficacy, and adherence on change in pain intensity during 2 weeks, controlling for covariates and treatment condition; and Aim 3, identify nurses' perceptions of the use of e-PainSupport, including facilitators for and barriers to integration into agency workflow and benefits for patients. Participants (132 triads of patients, caregivers, and hospice nurses) will be recruited from Midwest hospice agencies. Patient and caregiver outcomes will be assessed at baseline and 2 weeks later. Data will be analyzed with multilevel modeling. Post-intervention, semi-structured interviews with nurses in the e-PainSupport condition will be analyzed using qualitative content analysis to identify perceived practice changes. e-PainSupport has the potential to facilitate nurse-patient communication and improve hospice patient pain management., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 Published by Elsevier Inc.)

Objectives: To evaluate the bone microstructure of autogenous graft bone in elderly people (mean age, 66 years), we compared the bone volume/total volume and bone mineral density of four donor sites that are commonly harvested for maxillofacial surgery and dental implant treatments, using X-ray micro-computed tomography., Methods: Eighteen Japanese cadavers were included in this study. Overall, 66 harvested bones (mandibular symphysis, mandibular ramus, ilium, and tibia) were studied. Micro-computed tomography scans of four sites were performed to analyze the trabecular structures, bone mineral density, and bone volume/total volume in these bones., Results: The mandibular symphysis bones showed the highest bone volume/total volume and bone mineral density at the four sites. There was a significant difference in the bone volume/total volume between the mandibular symphysis and tibia groups. There was also a significant difference in bone mineral density between the mandibular symphysis group and the ilium and tibia groups. In the three-dimensional observations, the structures of the mandibular trabecular were plate-type. The structures of the tibial bone were mixtures of plate- and rod-types. In the ilium, most trabecula were rod-shaped., Conclusions: Mandibular symphysis and ramus had a higher bone volume/total volume and bone mineral density of the four sites and did not show regressive changes in our findings. Mandibular bone is the most suitable source of autogenous graft bone material because of its superior bone quality and quantity., (Copyright © 2021 Japanese Association for Oral Biology. Published by Elsevier B.V. All rights reserved.)

Objectives: Tooth organ development was examined in a serumless, chemically defined organ culture system to determine whether morphological and functional development was identical to that in in vivo and serum-supplemented organ cultures., Methods: Mouse mandibular first molar tooth organs at 16 days of gestation were cultured for up to 28 days in a Tronwell culture system using a serum-supplemented or serumless, chemically defined medium. After culture, specimens were processed for assessing tooth development using ultrastructural, immunohistochemical, and mRNA expression analyses., Results: In serum-supplemented conditions, inner enamel epithelial cells differentiated into secretory-stage ameloblasts, which formed enamel and reached the maturation stage after 14 and 21 days of culture, respectively. Ameloblasts deposited a basal lamina on immature enamel. Conversely, in serumless conditions, ameloblasts formed enamel on mineralized dentin after 21 days. Moreover, maturation-stage ameloblasts did not form basal lamina and directly absorbed mineralized enamel after 28 days of culture. RT-PCR analysis indicated that tooth organs, cultured in serumless conditions for 28 days, had significantly reduced expression levels of ODAM, amelotin, and laminin-322., Conclusions: These results indicate that several differences were detected compared to the development in serum-supplemented conditions, such as delayed enamel and dentin formation and the failure of maturation-stage ameloblasts to form basal laminae. Therefore, our results suggest that some factors might be required for the steady formation of mineralized dentin, enamel, and a basal lamina. Additionally, our results indicate that a basal lamina is necessary for enamel maturation., Competing Interests: Declaration of competing interest The authors have no conflicts of interest., (Copyright © 2021 Japanese Association for Oral Biology. Published by Elsevier B.V. All rights reserved.)