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1.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 56(9): 909-913, 2021 Sep 09.
Artigo em Chinês | MEDLINE | ID: mdl-34496541

RESUMO

Objective: To investigate the changes of occlusal delay time, percentage of occlusal force and patients' subjective satisfaction of masticatory function for single implant crown in one year after the application of space reserved occlusion design. To provide data support and suggestions for clinical occlusion design. Methods: Patients who had received single posterior dental implant restoration in Department of Prosthodontics, Capital Medical University School of Stomatology from January 2019 to December 2019 were selected. At 0.5, 3, 6 and 12 months after restoration, the T-scan Ⅲ occlusal analyzer was used to detect and record the initial occlusal contact time of the natural tooth and implanted single crown, the occlusal force percentage of single implant prosthesis and corresponding tooth on the contralateral side (control teeth) on the contralateral side (control teeth) were also recorded. Subjective satisfaction with the masticatory function of the implants was recorded using visual analogue scale (VAS). The changes of occlusal delay time (the difference of the initial occlusal time between implant restoration and the natural teeth), percentage of occlusal force and patients' subjective feeling with time were analyzed. All data were analyzed by repeated measurement analysis of variance, bilatteral P<0.01 was considered statistically significant. Results: A total of 48 patients aged (36.8±8.4) years (23 males, 25 females, aged 23-50 years) were recruited. The occlusal delay time at 0.5 months was 0.15 (0.08, 0.20) s, at 3 months was 0.11 (0.06, 0.16) s, at 6 months was 0.07 (0.03, 0.13) s and at 12 months was 0.06 (0.03, 0.10) s. The occlusal delay time was shortened at every two time points, and the occlusal force percentage of the implant crown increased significantly. The percentage of occlusal force of implant prosthesis at 0.5 months was (7.7±4.8)%, at 3 months was (10.6±5.9)%, at 6 months was (12.3±6.2)% and at 12 months was (13.2±6.7)%. The most significant change was during the period of 0.5-3 months. At 0.5 months, the occlusal force of implant prosthesis was significantly lower than that of control teeth (14.3±6.5)% (P<0.01). The VAS score at 0.5 months was (7.06±1.64) and was (8.71±0.74) at 12 months. The score was increased and the difference was statistically significant from 3 month to 12 month (P<0.01). Conclusions: The change of occlusal force percentage of single posterior dental implant is most obvious within 3 months after restoration. The occlusal condition should be reexamined and adjust occlusal after 3 months of implant restoration as appropriate.


Assuntos
Implantes Dentários , Prótese Dentária Fixada por Implante , Força de Mordida , Coroas , Oclusão Dentária , Feminino , Humanos , Masculino
3.
Med Hypotheses ; 145: 110294, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33032172

RESUMO

In recent decades, with the rapid development of dental implant technology, dental implants have been widely used in clinical practice. Various complications, including a lack of osseointegration, may occur after dental implantation. However, the occurrence of osteointegration failure after dental implantation is often complicated and unpredictable, and existing treatment methods cannot reverse osteointegration failure to achieve the optimum condition. A noninvasive, easy-to-operate, low-cost, fast-acting mechanotherapy is expected to solve this problem. Extracorporeal shock wave therapy (ESWT) is widely used to treat delayed healing, bone nonunion fractures, femoral head necrosis and other orthopedic diseases and plays a significant role in promoting bone regeneration. Studies have shown that ESWT can promote bone formation and osseointegration of titanium devices in vivo. In previous experiments, ESWT was found to regulate the activity of inflammatory cells, osteoblasts and mesenchymal stem cells. Studies have also mentioned the role of ESWT in promoting angiogenesis and bactericidal activity. Therefore, our hypothesis is that extracorporeal shock wave therapy can facilitate the realization of osteointegration by regulating the immune response, inducing regeneration of the jaw and alveolar bone, and promoting angiogenesis and bactericidal efficacy.


Assuntos
Implantes Dentários , Tratamento por Ondas de Choque Extracorpóreas , Fraturas não Consolidadas , Regeneração Óssea , Fraturas não Consolidadas/terapia , Humanos , Osseointegração
4.
Eur Rev Med Pharmacol Sci ; 23(13): 5896-5903, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31298340

RESUMO

OBJECTIVE: To elucidate the function of long non-coding RNA (lncRNA) SNHG1 in acute myeloid leukemia (AML) and to explore its biological mechanism. PATIENTS AND METHODS: Expression levels of lncRNA SNHG1 and miR-488-5p in AML cell lines pAML and THP-1 were determined by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR). Proliferative potential and cell cycle progression of pAML and THP-1 cells were detected after SNHG1 knockdown. Potential binding sites of SNHG1 and miR-488-5p were predicted by bioinformatics. Through RNA Binding Protein Immunoprecipitation (RIP) assay and luciferase reporter gene assay, we evaluated the binding condition between SNHG1 and miR-488-5p. MiR-488-5p expression in pAML and THP-1 cells with SNHG1 knockdown was detected by qRT-PCR to further verify their interaction. Subsequently, binding sites of NUP205 and miR-488-5p were predicted. Both mRNA and protein levels of NUP205 in pAML and THP-1 cells were examined. The regulatory effects of overexpressed NUP205 on proliferative potential and cell cycle progression of pAML and THP-1 cells transfected with si-SNHG1 were explored by gain-of-function experiments. RESULTS: LncRNA SNHG1 was highly expressed in pAML and THP-1 cells, while miR-488-5p was lowly expressed. SNHG1 knockdown in pAML and THP-1 cells inhibited proliferative ability and arrested cell cycle in G0/G1 phase. Knockdown of SNHG1 markedly upregulated the miR-488-5p expression in pAML and THP-1 cells. Furthermore, RIP and luciferase reporter gene assay confirmed the binding between SNHG1 and miR-488-5p. NUP205 was highly expressed in pAML and THP-1 cells at both mRNA and protein levels. Moreover, luciferase reporter gene assay indicated that NUP205 could bind to miR-488-5p. More importantly, the overexpression of NUP205 in pAML and THP-1 cells reversed the inhibitory effect of SNHG1 knockdown on proliferative ability and cell cycle progression. CONCLUSIONS: LncRNA SNHG1 promotes the development of AML through miR-488-5p/NUP205 axis.


Assuntos
Leucemia Mieloide Aguda/metabolismo , MicroRNAs/metabolismo , Complexo de Proteínas Formadoras de Poros Nucleares/metabolismo , RNA Longo não Codificante/metabolismo , Proliferação de Células , Células Cultivadas , Humanos , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/patologia , MicroRNAs/genética , Complexo de Proteínas Formadoras de Poros Nucleares/genética , RNA Longo não Codificante/genética
5.
Zhonghua Zhong Liu Za Zhi ; 39(3): 202-206, 2017 Mar 23.
Artigo em Chinês | MEDLINE | ID: mdl-28316220

RESUMO

Objective: To analyze the differences between the social support for breast cancer patients and healthy female, and to explore the correlation between social support and quality of life (QOL) in the patients. Methods: From January 2013 to December 2014, 101 patients with operable breast cancer treated at Xinyu City People's Hospital were recruited as the experimental group. They completed questionnaires in the preoperative, postoperative chemoradiotherapy and rehabilitation periods, respectively.101 healthy female volunteers recruited from the community were included as control group, whose age and level of education were matched with those of the experimental group.The general questionnaire including basic information, disease conditions and other projects, perceived social support scale (PSSS), quality of life of breast cancer patients (FACT-B) were applied to evaluate the general situation, social support and QOL of the subjects. The differences in PSSS scores between the experimental and control groups were compared. The correlation between PSSS score and FACT-B score in the experimental group was analyzed. SPSS 18.0 software was used for statistical analysis. Results: The general situations of the experimental and control groups were comparable (all P>0.05). The rates of the total social support score ≥50 in the experimental and control groups were not significantly different (93.6% vs. 94.7%, P=0.067). Compared with that of the control group (23.2±4.8), the scores of family support in the experimental group in preoperative, postoperative chemoradiotherapy and rehabilitation periods were statistically higher (25.6±3.2, 24.2±4.2 and 24.0±3.4, respectively, P=0.034). The social support scores of patients with different demographic characteristics were different. Among the demographic characteristics, years of education and place of residence had the largest impact. The scores of social support in patients with longer education years and living in the urban area were higher than those with shorter education years and living in the rural areas (P<0.001). The scores of QOL among preoperative, postoperative chemoradiotherapy and rehabilitation periods in the experimental group were significantly different (all P<0.05). The patients gained the highest score of QOL in the preoperative period (110.7±5.1) and the lowest in the postoperative chemoradiotherapy period (95.3±18.1). The QOL of patients in the experimental group in preoperative, postoperative chemoradiotherapy and rehabilitation periods were all positively correlated with the overall social support (all P<0.01). Conclusions: The QOL of breast cancer patients at different periods of treatment is positively correlated with the social support. The quality of life can be enhanced by improving the social support for the patients.


Assuntos
Neoplasias da Mama/psicologia , Qualidade de Vida , Apoio Social , Neoplasias da Mama/terapia , Estudos de Casos e Controles , Quimiorradioterapia , Feminino , Humanos , Período Pós-Operatório , Inquéritos e Questionários
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