1.Restoration of a dental defect in a patient with ectodermal dysplasia: a case report and literature review
LV Hong ; LIU Qinghui ; LI Jiafu ; CAI Hui ; BU Honghu ; PU Yiming ; GUO Jincai
Journal of Prevention and Treatment for Stomatological Diseases 2024;32(4):287-295
Objective:
To explore the treatment options for congenitally missing teeth in patients with ectodermal dysplasia and provide a clinical reference.
Methods:
A patient with ectodermal dysplasia with a concave midface, anterior protrusion of the chin, and underdevelopment of the lower third of the face presented with congenital loss of multiple maxillary teeth, malocclusion of the remaining teeth, congenital loss of mandibular dentition, small dental arches, and upper and lower alveolar bone hypoplasia. The patient was treated by means of a removable partial maxillary prosthesis, implants in the anterior region of the lower mandible designed with the assistance of digital guides, and bar-clamped implant-overlay prostheses. A literature review of the protocol for the treatment of this condition was also conducted.
Results:
In addition to good retention and stability after denture wear, an excellent occlusal relationship, improvement of the patient's facial appearance, including upper and lower lip fullness, more equal balancing of the lower and middle 1/3 of the face, and improved masticatory function were achieved. The results of the literature review showed that patients with ectodermal dysplasia who are congenitally edentulous usually have a complex intraoral situation that makes restoration difficult, and common restorative modalities for these patients include fixed bridges, removable partial dentures, complete dentures, overdentures, and implant prostheses, which need to be selected according to the actual intraoral situation of each patient. Currently, there is no consensus on the treatment of congenitally missing teeth in patients with ectodermal dysplasia, and some scholars have suggested that fixed restorations be recommended for patients with fewer missing teeth, while the option of removable or implant-covered denture restorations should be given to patients with more missing teeth, with removeable prostheses for underage patients that are replaced with permanent fixed prostheses when the jaws have stabilized.
Conclusion
In patients with ectodermal dysplasia with congenital tooth loss, all factors should be taken into account, and an individualized restorative plan should be developed.
2.Effect of Shenfu injection on acute lung injury in hemorrhagic shock rats
Gaihong LIU ; Dongbin ZHANG ; Jiafu JI ; Shangkun SI ; Fan SU ; Yingxue XU ; Yong-Liang CHI ; Xiaoqian YI
The Journal of Clinical Anesthesiology 2024;40(1):73-79
Objective To observe the effect of Shenfu injection on lung injury caused by hemor-rhagic shock(HS)in rats and explore the related potential mechanism.Methods Thirty-six SPF healthy male SD rats,aged 16-17 weeks,weighing 400-600 g,were randomly divided into three groups:sham op-eration group(group SH),HS group(group HS),and Shenfu injection group(group SF),12 rats in each group.In group SH,only the right femoral vein and femoral artery were separated after anesthesia,and ve-nous catheterization was not performed.HS model was established in groups SF and HS.In group HS,liquid resuscitation was performed through an intravenous catheter,and the resuscitation fluid consisted of the auto-blood lost and the compound sodium chloride injection equivalent to 1.5 times the blood loss and 10 ml/kg normal saline.In group SF,the resuscitation fluid consisted of the lost autoblood and the compound sodium chloride injection equivalent to 1.5 times the blood loss and Shenfu injection 10 ml/kg.The whole perfusion time was about 60 minutes.Six rats in the three groups were randomly anesthetized 24 and 48 hours after op-eration.The wet/dry weight ratio(W/D)of lung tissues was detected.The concentrations of interleukin-6(IL-6),IL-17,IL-10,and transforming growth factor-β(TGF-β)were detected by ELISA,the mRNA ex-pression of retinoic acid-related orphan nuclear receptor γt(RORγt),transcription factor forkhead box pro-tein 3(Foxp3),and hypoxia-inducible factor-1α(HIF-1α)in lung tissues were detected by PCR.The pro-tein contents of RORγt,Foxp3,HIF-1α,aquaporin 1(AQP1),and AQP5 in lung tissue were detected by Western blot.Pathological changesunder HE staining light microscope and lung injury scores were observed.Results Compared with 24 hours after operation,W/D,the concentrations of IL-6 and IL-17,mRNA ex-pression and protein content of RORγt and HIF-1α,and lung injury score were significantly decreased(P<0.05),the concentrations of IL-10,and TGF-β,Foxp3 mRNA expression and protein content,and AQP1 protein content were significantly increased in group SF 48 hours after operation(P<0.05).Compared with group SH,W/D,the concentrations of IL-6,IL-17,IL-10,and TGF-β,mRNA expression and protein content of RORγt,Foxp 3,and HIF-1α,and lung injury score were significantly increased(P<0.05),AQP1 and AQP5 protein contents were significantly decreased in groups HS and SF 24 and 48 hours after operation(P<0.05),and alveolar structure was damaged under light microscope and alveolar interstitium was filled with a large amount of edematous fluid,during which a large number of inflammatory cells infiltra-ted.Compared with group HS,W/D,the concentrations of IL-6 and IL-17,mRNA expression and protein content of RORγt and HIF-1α,and lung injury score were significantly decreased(P<0.05),the concen-trations of IL-10 and TGF-β,Foxp3 mRNA expression and protein content,AQP1 and AQP5 protein con-tents were significantly increased in group SF 24 and 48 hours after surgery(P<0.05),and the alveolar structure was improved under light microscope,and edema was reduced,and the number of inflammatory cells was reduced.Conclusion Shenfu injection can regulate the balance between pro-inflammatory factors IL-6 and IL-17,and anti-inflammatory factors IL-10 and TGF-β,increase the protein content of AQP1 and AQP5 in lung tissue,and decrease the W/D and injury score in lung tissue,thus alleviating lung injury in HS rats.The mechanism may be related to the regulation of HIF-1α-RORγt/Foxp3 balance.
3.Effect of positioning and non-positioning cervical rotatory manipulation on tensile mechanical properties of internal carotid artery with different degrees of atherosclerosis
Shaoqun ZHANG ; Chuanjiang ZHENG ; Jiafu LIU ; Shunwan JIANG
Chinese Journal of Tissue Engineering Research 2024;28(30):4788-4794
BACKGROUND:Cervical rotatory manipulation is widely used in the treatment of neck-related diseases with a clear curative effect,but it also has some risks in clinical practice.The previous study of our group found that cervical rotatory manipulation can reduce the tensile mechanical properties of the atherosclerotic carotid artery,but it is not clear about the effects of different cervical rotatory manipulations(positioning/non-positioning)and different degrees(mild/moderate/severe)of atherosclerosis on the tensile mechanical properties of the carotid artery. OBJECTIVE:To explore the effects of different cervical rotatory manipulations and different degrees of atherosclerosis on the tensile mechanical properties of the internal carotid artery. METHODS:The 120 male New Zealand rabbits were randomly divided into eight experimental groups with different degrees of atherosclerosis and different cervical rotatory manipulations:severe atherosclerosis + positioning/non-positioning cervical rotatory manipulation,moderate atherosclerosis + positioning/non-positioning cervical rotatory manipulation,mild atherosclerosis + positioning/non-positioning cervical rotatory manipulation,and normal rabbit + positioning/non-positioning cervical rotatory manipulation,as well as three model control groups:mild/moderate/severe atherosclerosis + non-cervical rotatory manipulation,and the blank control group.Two-factor analysis of variance was used to explore the main effects and interactive effects of different cervical rotatory manipulations and different degrees of atherosclerosis on the tensile mechanical properties of the internal carotid artery.One-way analysis of variance was applied to explore the influence of different cervical rotatory manipulations on the tensile mechanical properties of the internal carotid artery under the same degree of atherosclerosis. RESULTS AND CONCLUSION:(1)Both different cervical rotatory manipulations and different degrees of atherosclerosis were the main effect factors affecting the tensile mechanical properties of the internal carotid artery.(2)For both mild and severe atherosclerosis,both positioning and non-positioning cervical rotatory manipulations reduced the maximum stress of the internal carotid artery(P<0.05)and also increased the physiological elastic modulus of the internal carotid artery(P<0.05).(3)For moderate atherosclerosis,positioning and non-positioning cervical rotatory manipulations also increased the physiological elastic modulus of the internal carotid artery(P<0.05).Non-positioning cervical rotatory manipulation reduced the maximum strain of the internal carotid artery(P<0.05),and its maximum strain was also less than the internal carotid artery of the positioning cervical rotatory manipulations(P<0.05).(4)For the normal internal carotid artery,in addition to the maximum strain,both positioning and non-positioning cervical rotatory manipulations had no statistically significant effects on other tensile mechanical indicators of the internal carotid artery(P>0.05).(5)The results suggest that both positioning and non-positioning cervical rotatory manipulations may increase the stiffness of the atherosclerotic internal carotid artery,reducing its elasticity and brittleness.Therefore,both positioning and non-positioning cervical rotatory manipulations may increase the risk of cardiovascular events in mild/moderate/severe atherosclerotic internal carotid artery,and the more severe the atherosclerosis is,the greater the risk of positioning/non-positioning cervical rotatory manipulation treatment,but the risk of positioning cervical rotatory manipulation is not lower than that of non-positioning cervical rotatory manipulation.
4.Effect of MRI preoperative quantitative assessment of the range of talus osteochondral injury on surgical selection and medium-to long-term follow-up results
Hongda LIU ; Rongliang YAN ; Yan GAO ; Jianghua CHEN ; Pingyan QU ; Lei WANG ; Yi PENG ; Lihai CAO ; Xiaojian DU ; Jiafu QU
Chinese Journal of Tissue Engineering Research 2024;33(33):5388-5395
BACKGROUND:Talus cartilage injury is a common motor system disease.This type of injury will affect the patient's daily life and work ability,and may worsen the condition if left untreated.Surgical treatment is commonly used,but the selection of surgical methods and the evaluation of medium-and long-term follow-up results have always been difficult clinical problems. OBJECTIVE:To explore the influence of T1ρ technique on the range of quantitative evaluation of talus osteochondral injury on the choice of surgical method and the results of medium-and long-term follow-up. METHODS:A total of 154 patients with osteochondral injury of talus admitted to The Second Hospital of Tangshan from January 2019 to August 2022 were retrospectively selected as the study subjects.The lesion site of talus was examined by MRI before operation,and the T1ρ and T2 values of different types were compared.Different surgical methods were selected according to the different T1ρ values.Group A(n=73)was treated with microfracture surgery with T1ρ<45 ms;group B(n=81)was treated with autogenous bone and cartilage transplantation with T1ρ≥45 ms.The general clinical characteristics and curative effects of patients under different surgical methods were compared;the important factors of postoperative recurrence were analyzed by multivariate Logistic regression,and the relationship between T1ρ value and postoperative recurrence was analyzed by restricted cubic spline graph,y=1-1/(1+e-z)regression equation to build a prediction model.The stability of the model was verified by cross-checking method. RESULTS AND CONCLUSION:(1)Classification of talus osteochondral injury in 154 patients(type Ⅰ:36 cases;type Ⅱ:37 cases;type Ⅲ:40 cases;type Ⅳ:41 cases),T1ρ and T2 values of the four groups were statistically significant(P<0.05);pairwise comparison was also statistically significant(all P<0.05).(2)After treatment of 154 patients,7 cases(4.6%)had local swelling,3 cases(2.0%)had pain aggravation,and 5 cases(3.3%)had wound infection.There were 2 cases(1.3%)with poor cartilage healing.(3)After treatment,there were statistically significant differences between groups A and B in terms of American Orthopaedic Foot&Ankle Society score,visual analog scale score,plantar flexor motion range,dorsoextension motion range,subchondral bone marrow edema volume,interleukin-6,interleukin-8,C-reactive protein,procalcitonin,platelet-derived growth factor,transforming growth factor-β1,and efficacy(P<0.05).The total effective rate of group B(90%)was higher than that of group A(85%)(P<0.05).(4)Age(OR=1.589,95%CI:0.305-1.252,P=0.036),interleukin-6(OR=1.737,95%CI:0.974-5.254,P=0.049),interleukin-8(OR=1.385,95%CI:1.066-4.355,P=0.034),C-reactive protein(OR=1.957,95%CI:1.323-2.178,P=0.035),transforming growth factor-β1(OR=1.459,95%CI:0.897-2.455,P=0.038),T1-ρ(OR=1.687,95%CI:0.854-3.321,P=0.026),T2(OR=1.843,95%CI:0.657-2.454,P=0.036),complications(OR=1.719,95%CI:0.654-3.464,P=0.019),and classification of osteochondral injury of talus(OR=3.789,95%CI:1.023-5.897,P=0.028)were independent risk factors for postoperative recurrence.Microfracture surgery(OR=0.751,95%CI:0.321-1.264,P=0.012)and autogenous bone and cartilage grafting(OR=0.649,95%CI:0.246-1.356,P=0.023)were independent protective factors for recurrence after medium-and long-term follow-up.(5)When T1ρ value≤35 ms,the risk of postoperative recurrence decreased rapidly,and when T1ρ value>35 ms,the risk of postoperative recurrence increased rapidly.(6)Further stepwise regression analysis showed that these nine risk factors were most closely associated with postoperative recurrence,and the formula for postoperative recurrence was obtained.The probability of postoperative recurrence was calculated using the regression equation.When P=0.75,the maximum value of Jorden index was 77.728,indicating that the model has a better prediction effect.(7)It is indicated that the quantitative evaluation of T1ρ before operation can effectively guide the selection of surgical methods,improve the success rate of surgery and the quality of life of patients.
5.Prognosis and influencing factors analysis of patients with initially resectable gastric cancer liver metastasis who were treated by different modalities: a nationwide, multicenter clinical study
Li LI ; Yunhe GAO ; Liang SHANG ; Zhaoqing TANG ; Kan XUE ; Jiang YU ; Yanrui LIANG ; Zirui HE ; Bin KE ; Hualong ZHENG ; Hua HUANG ; Jianping XIONG ; Zhongyuan HE ; Jiyang LI ; Tingting LU ; Qiying SONG ; Shihe LIU ; Hongqing XI ; Yun TANG ; Zhi QIAO ; Han LIANG ; Jiafu JI ; Lin CHEN
Chinese Journal of Digestive Surgery 2024;23(1):114-124
Objective:To investigate the prognosis of patients with initially resectable gastric cancer liver metastasis (GCLM) who were treated by different modalities, and analyze the influencing factors for prognosis of patients.Methods:The retrospective cohort study was conducted. The clinicopathological data of 327 patients with initially resectable GCLM who were included in the database of a nationwide multicenter retrospective cohort study on GCLM based on real-world data from January 2010 to December 2019 were collected. There were 267 males and 60 females, aged 61(54,68)years. According to the specific situations of patients, treatment modalities included radical surgery combined with systemic treatment, palliative surgery combined with systemic treatment, and systemic treatment alone. Observation indicators: (1) clinical characteristics of patients who were treated by different modalities; (2) prognostic outcomes of patients who were treated by different modalities; (3) analysis of influencing factors for prognosis of patients with initially resectable GCLM; (4) screening of potential beneficiaries in patients who were treated by radical surgery plus systemic treatment and patients who were treated by palliative surgery plus systemic treatment. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the rank sum test. Count data were described as absolute numbers or percentages, and comparison between groups was conducted using the chi-square test. The Kaplan-Meier method was used to calculate survival rate and draw survival curve, and Log-Rank test was used for survival analysis. Univariate and multivariate analyses were conducted using the COX proportional hazard regression model. The propensity score matching was employed by the 1:1 nearest neighbor matching method with a caliper value of 0.1. The forest plots were utilized to evaluate potential benefits of diverse surgical combined with systemic treatments within the population. Results:(1) Clinical characteristics of patients who were treated by different modalities. Of 327 patients, there were 118 cases undergoing radical surgery plus systemic treatment, 164 cases undergoing palliative surgery plus systemic treatment, and 45 cases undergoing systemic treatment alone. There were significant differences in smoking, drinking, site of primary gastric tumor, diameter of primary gastric tumor, site of liver metastasis, and metastatic interval among the three groups of patients ( P<0.05). (2) Prognostic outcomes of patients who were treated by different modalities. The median overall survival time of the 327 pati-ents was 19.9 months (95% confidence interval as 14.9-24.9 months), with 1-, 3-year overall survival rate of 61.3%, 32.7%, respectively. The 1-year overall survival rates of patients undergoing radical surgery plus systemic treatment, palliative surgery plus systemic treatment and systemic treatment alone were 68.3%, 63.1%, 30.6%, and the 3-year overall survival rates were 41.1%, 29.9%, 11.9%, showing a significant difference in overall survival rate among the three groups of patients ( χ2=19.46, P<0.05). Results of further analysis showed that there was a significant difference in overall survival rate between patients undergoing radical surgery plus systemic treatment and patients undergoing systemic treatment alone ( hazard ratio=0.40, 95% confidence interval as 0.26-0.61, P<0.05), between patients undergoing palliative surgery plus systemic treatment and patients under-going systemic treatment alone ( hazard ratio=0.47, 95% confidence interval as 0.32-0.71, P<0.05). (3) Analysis of influencing factors for prognosis of patients with initially resectable GCLM. Results of multivariate analysis showed that the larger primary gastric tumor, poorly differentiated tumor, larger liver metastasis, multiple hepatic metastases were independent risk factors for prognosis of patients with initially resectable GCLM ( hazard ratio=1.20, 1.70, 1.20, 2.06, 95% confidence interval as 1.14-1.27, 1.25-2.31, 1.04-1.42, 1.45-2.92, P<0.05) and immunotherapy or targeted therapy, the treatment modality of radical or palliative surgery plus systemic therapy were independent protective factors for prognosis of patients with initially resectable GCLM ( hazard ratio=0.60, 0.39, 0.46, 95% confidence interval as 0.42-0.87, 0.25-0.60, 0.30-0.70, P<0.05). (4) Screening of potentinal beneficiaries in patients who were treated by radical surgery plus systemic treatment and patients who were treated by palliative surgery plus systemic treatment. Results of forest plots analysis showed that for patients with high-moderate differentiated GCLM and patients with liver metastasis located in the left liver, the overall survival rate of patients undergoing radical surgery plus systemic treatment was better than patients undergoing palliative surgery plus systemic treatment ( hazard ratio=0.21, 0.42, 95% confidence interval as 0.09-0.48, 0.23-0.78, P<0.05). Conclusions:Compared to systemic therapy alone, both radical and palliative surgery plus systemic therapy can improve the pro-gnosis of patients with initially resectable GCLM. The larger primary gastric tumor, poorly differen-tiated tumor, larger liver metastasis, multiple hepatic metastases are independent risk factors for prognosis of patients with initial resectable GCLM and immunotherapy or targeted therapy, the treatment modality of radical or palliative surgery plus systemic therapy are independent protective factors for prognosis of patients with initially resectable GCLM.
6.Interpretation on the report of global cancer statistics 2022
Xi ZHANG ; Lei YANG ; Shuo LIU ; Lili CAO ; Ning WANG ; Huichao LI ; Jiafu JI
Chinese Journal of Oncology 2024;46(7):710-721
In April 2024, the World Health Organization/International Agency for Research on Cancer (IARC) published the global cancer statistics 2022 in the CA: Cancer Journal for Clinicians. This report focuses on the incidence and mortality of 36 cancers in 185 countries or territories worldwide, analyzing the differences of gender, geographic region, and the Human Development Index (HDI) level. It is estimated that in the year 2022, there were 19.96 million new cancer cases and 9.74 million cancer deaths worldwide. Lung cancer (2 480 301, 12.4%) was the most frequently diagnosed cancer in 2022, followed by female breast cancer (2 295 686, 11.5%), colorectal cancer (1 926 118, 9.6%), prostate cancer (1 466 680, 7.3%), and gastric cancer (968 350, 4.9%). Lung cancer (1 817 172, 18.7%) was also the leading cause of cancer death, followed by colorectal cancer (903 859, 9.3%), liver cancer (757 948, 7.8%), female breast cancer (665 684, 6.9%), and gastric cancer (659 853, 6.8%). With demographics-based predictions indicating that the number of new cases of cancer will reach over 35 million by 2050. The Beijing Office for Cancer Prevention and Control team has collated this report and briefly interpreted it in combination with the current situation of cancer incidence and mortality in China.
7.Sequencing analysis of whole genome of one strain of bovine Akabane virus and es-tablishment of fluorescence quantitative PCR for virus detection
Jiafu SHANG ; Le HU ; Mingke LI ; Yujian WU ; Xingwei NI ; Xiaowei YANG ; Xia LIU ; Liwu ZHANG ; Tingting XU ; Guangwei ZHAO
Chinese Journal of Veterinary Science 2024;44(9):1872-1881
In order to understand the prevalence of Akabane disease(AKAD)in Guizhou Province and the molecular characteristics of the isolates,the whole-genome sequence of a strain of Akabane virus(AKAV)from a bovine AKAD-positive sample was determined and analyzed.The genotype and genetic variation of the strain were also explored.Based on the conserved S sequence,a fluores-cence quantitative PCR(qPCR)detection method was established and applied for the investigation of AKAV infection status in four large-scale beef cattle farms of Guizhou.Results showed that the S,M and L fragments of the bovine strain were highly homologous to the Tianjin strain(TJ2016/China/2016)and the Australian strain(JaLAB39/Australia/1959),where they were in the same evolutionary branch and belonged to genotype Ⅱ.Sensitivity assay found that the lowest detection limit was 2.5 X 101 copies/μL.Specificity assay showed the established method detected only AKAV with no amplification on bovine bluetongue virus(BLUV),Pasteurella multocida(PM),bovine infectious rhinotracheitis virus(IBRV)and bovine Mycoplasma bovis.The variation coefficients of inter-and intra batches in the repeatability test were both lower than 2.26%.These findings illus-trated that the established qPCR method had high sensitivity,good specificity and repeatability.A total of 298 serum samples from 4 large-scale beef cattle farms in Qianxi City and Huangping County of Guizhou Province were collected and tested for AKAV by the method.Out of 298 sam-ples,25 positive samples(25/298)were detected as positive with a positive rate of 8.39%.In sum-mary,this work provided the reference data for a deep understanding of the molecular prevalence of AKAV in Guizhou Province and laid foundation for the prevention and control of AKAD.
8.Interpretation on the report of global cancer statistics 2022
Xi ZHANG ; Lei YANG ; Shuo LIU ; Lili CAO ; Ning WANG ; Huichao LI ; Jiafu JI
Chinese Journal of Oncology 2024;46(7):710-721
In April 2024, the World Health Organization/International Agency for Research on Cancer (IARC) published the global cancer statistics 2022 in the CA: Cancer Journal for Clinicians. This report focuses on the incidence and mortality of 36 cancers in 185 countries or territories worldwide, analyzing the differences of gender, geographic region, and the Human Development Index (HDI) level. It is estimated that in the year 2022, there were 19.96 million new cancer cases and 9.74 million cancer deaths worldwide. Lung cancer (2 480 301, 12.4%) was the most frequently diagnosed cancer in 2022, followed by female breast cancer (2 295 686, 11.5%), colorectal cancer (1 926 118, 9.6%), prostate cancer (1 466 680, 7.3%), and gastric cancer (968 350, 4.9%). Lung cancer (1 817 172, 18.7%) was also the leading cause of cancer death, followed by colorectal cancer (903 859, 9.3%), liver cancer (757 948, 7.8%), female breast cancer (665 684, 6.9%), and gastric cancer (659 853, 6.8%). With demographics-based predictions indicating that the number of new cases of cancer will reach over 35 million by 2050. The Beijing Office for Cancer Prevention and Control team has collated this report and briefly interpreted it in combination with the current situation of cancer incidence and mortality in China.
9.A comparative study of the clinical application of anatomical healing abutments versus finished healing abutments for mandibular first molar implants
LI Jiafu ; LIU Qing ; LIU Qinghui
Journal of Prevention and Treatment for Stomatological Diseases 2023;31(5):337-344
Objective :
To evaluate the effect of anatomical healing abutments for mandibular first molars on the morphological changes of gingival soft tissue after implant restoration, as well as on peri-implant gingival molding, food ingrowth and patient satisfaction, to provide a basis for clinical selection.
Methods :
Twenty-six patients who received implant restoration for a single missing mandibular first molar between September 2020 and September 2021 at the Oral Implant Center of Changsha Stomatological Hospital were randomly divided into a control group (13 cases with 14 implants) and a trial group (13 cases with 14 implants), of which 12 were male and 14 were female; the trial group had anatomical healing abutments applied for 4 weeks and then underwent crown restoration, while the control group finished five time points (before the second stage surgery, 4 weeks after the second stage surgery, immediately after the crown restoration, 4 weeks after the crown restoration, and 12 weeks after the crown restoration). A 3Shape intraoral scanner was used to scan the jaw before and 4 weeks after the second stage surgery to quantify the soft tissue changes and compare the effect of the healing abutment on gingival molding between the two groups. The incidence of food impaction was recorded and compared between the two groups at 4 weeks and 12 weeks after crown restoration. Patient satisfaction was recorded and compared between the two groups immediately after crown restoration, 4 weeks after crown restoration and 12 weeks after crown restoration
Results :
Four weeks after implant surgery, it was observed that the gingival proximal and distal gingival papillae increased on the coronal side in the test group compared to the control group, 0.50 (0.26, 0.72) mm in the near-medium test group and 0.27 (0.24, 0.38) mm in the control group, with a statistically significant difference (P = 0.029), and 0.48 (0.26, 0.62) mm in the far-medium test group and 0.23 (0.13, 0.39) mm in the control group, with a statistically significant difference (P = 0.004). There was no statistically significant difference (P>0.05) in the buccolingual to gingival margin apex to coronal molding or in the buccolingual to lingual soft tissue at 0, 1, or 2 mm of the root of the middle 1/3 apex of the buccal and lingual gingival margins between the two groups. Compared to the control group, there was no statistically significant difference in the incidence of food impaction observed 4 weeks and 12 weeks after crown restoration in the test group (P>0.05). The satisfaction scores were higher in the trial group than in the control group immediately, 4 weeks, and 12 weeks after crown restoration, and the difference between the groups was statistically significant (P < 0.05).
Conclusion
The anatomical healing abutment for the implant mandibular first molar was superior to the finished healing abutment in terms of soft tissue contouring with an increase in the coronal aspect of the proximal and distal gingival papillae, resulting in high patient satisfaction.
10.Gender differences in mortality following tanscatheter aortic valve replacement (TAVR): a single-centre retrospective analysis from China.
Qi LIU ; Yali WANG ; Yijian LI ; Tianyuan XIONG ; Fei CHEN ; Yuanweixiang OU ; Xi WANG ; Yijun YAO ; Kaiyu JIA ; Yujia LIANG ; Xin WEI ; Xi LI ; Yong PENG ; Jiafu WEI ; Sen HE ; Qiao LI ; Wei MENG ; Guo CHEN ; Wenxia ZHOU ; Mingxia ZHENG ; Xuan ZHOU ; Zhengang ZHAO ; Chen MAO ; Feng YUAN
Chinese Medical Journal 2023;136(20):2511-2513


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