Jinzhi He

Nov 12, 2024 | bmccancer.biomedcentral.com | Yinggang Xu |Lifeng Huang |Jue Wang |Jinzhi He |Ye Wang |Weiwei Zhang | +7 more

Based on previous studies, the incidence of grade 3–4 neutropenia for the control group was assumed to be 40%, and we hypothesized that the incidence in the experimental group would be halved to 20%. Using a two-sided significance level (α) of 0.05 and a power of 80%, the calculated sample size for each group was 79 patients. Given the short duration of the study, we anticipate a low rate of loss to follow-up.

Nov 6, 2023 | mdpi.com | Jinzhi He |Dongmei Deng

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Jul 20, 2023 | mdpi.com | Qi Hui Liu |Yuan Gao |Jinzhi He

1. IntroductionThe tooth root is the invisible two-thirds of a tooth embedded in the jaw bone and responsible for anchoring the tooth. Without the tooth root, the crown cannot fulfill its physiological functions. Tooth root development initiates immediately after crown formation [1]. When enamel reaches the cementum–dentin junction, the apical region of the enamel organ elongates and forms a bilayer epithelial structure named the Hertwig’s epithelial root sheath (HERS).