scholarly journals FasL Is Required for Osseous Healing in Extraction Sockets in Mice

2021 ◽  
Vol 12 ◽  
Author(s):  
Karol Alí Apaza Alccayhuaman ◽  
Patrick Heimel ◽  
Jung-Seok Lee ◽  
Stefan Tangl ◽  
Franz J. Strauss ◽  
...  
Keyword(s):  
Bone Regeneration ◽  
Tooth Extraction ◽  
Fas Ligand ◽  
Healing Process ◽  
Apical Part ◽  
Trabecular Thickness ◽  
Tnf Superfamily ◽  
Significant Difference ◽  
Coronal Region ◽  
Necrosis Factor

Fas ligand (FasL) is a member of the tumor necrosis factor (TNF) superfamily involved in the activation of apoptosis. Assuming that apoptosis is initiated after tooth extraction it is reasonable to suggest that FasL may play a pivotal role in the healing of extraction sockets. Herein, we tested the hypothesis of whether the lack of FasL impairs the healing of extraction sockets. To this end, we extracted upper right incisors of FasL knockout (KO) mice and their wildtype (WT) littermates. After a healing period of two weeks, bone volume over total volume (BV/TV) via µCT and descriptive histological analyses were performed. µCT revealed that BV/TV in the coronal region of the socket amounted to 39.4% in WT and 21.8% in KO, with a significant difference between the groups (p=0.002). Likewise, in the middle region of the socket, BV/TV amounted to 50.3% in WT and 40.8% in KO (p<0.001). In the apical part, however, no difference was noticed. Consistently, WT mice displayed a significantly higher median trabecular thickness and a lower trabecular separation when compared to the KO group at the coronal and central region of the socket. There was the overall tendency that in both, female and male mice, FasL affects bone regeneration. Taken together, these findings suggest that FasL deficiency may reduce bone regeneration during the healing process of extraction sockets.

scholarly journals Effects of Enhanced Hydrophilic Titanium Dioxide-Coated Hydroxyapatite on Bone Regeneration in Rabbit Calvarial Defects

2018 ◽  
Vol 19 (11) ◽  
pp. 3640 ◽  
Author(s):  
Ji-Eun Lee ◽  
Chung Bark ◽  
Hoang Quy ◽  
Seung-Jun Seo ◽  
Jae-Hong Lim ◽  
...  
Keyword(s):  
Bone Regeneration ◽  
Uv Irradiation ◽  
Early Stage ◽  
Healing Process ◽  
Negative Control ◽  
Control Group ◽  
Graft Material ◽  
Porous Hydroxyapatite ◽  
Significant Difference ◽  
Calvarial Defects

The regeneration of bone defects caused by periodontal disease or trauma is an important goal. Porous hydroxyapatite (HA) is an osteoconductive graft material. However, the hydrophobic properties of HA can be a disadvantage in the initial healing process. HA can be coated with TiO2 to improve its hydrophilicity, and ultraviolet irradiation (UV) can further increase the hydrophilicity by photofunctionalization. This study was designed to evaluate the effect of 5% TiO2-coated HA on rabbit calvarial defects and compare it with that of photofunctionalization on new bone in the early stage. The following four study groups were established, negative control, HA, TiO2-coated HA, and TiO2-coated HA with UV. The animals were sacrificed and the defects were assessed by radiography as well as histologic and histomorphometric analyses. At 2 and 8 weeks postoperatively, the TiO2-coated HA with UV group and TiO2-coated HA group showed significantly higher percentages of new bone than the control group (p < 0.05). UV irradiation increased the extent of new bone formation, and there was a significant difference between the TiO2-coated HA group and TiO2-coated HA with UV group. The combination of TiO2/HA and UV irradiation in bone regeneration appears to induce a favorable response.

scholarly journals The effect of a combination of propolis extract and bovine bone graft on the quantity of fibroblasts, osteoblasts and osteoclasts in tooth extraction sockets

2019 ◽  
Vol 52 (3) ◽  
pp. 126
Author(s):  
Louisa Christy Lunardhi ◽  
Utari Kresnoadi ◽  
Bambang Agustono
Keyword(s):  
Statistical Analysis ◽  
Bone Graft ◽  
Active Substance ◽  
Tooth Extraction ◽  
Alveolar Bone ◽  
Healing Process ◽  
Bovine Bone ◽  
Propolis Extract ◽  
Significant Difference ◽  
Average Quantity

Background: Tooth extraction is a procedure frequently performed in the field of dentistry that can cause alveolar bone resorption during the healing process. Therefore, preservation of sockets is necessary to maintain alveolar bone which represents one of the important factors in the successful manufacture of dentures. A combination of propolis extract and bovine bone graft (BBG) can accelerate bone regeneration. Purpose: The purpose of this study was to determine the effects of a combination of propolis extract and BBG on the quantity of fibroblasts, osteoblasts, and osteoclasts in the tooth extraction socket. Methods: 56 Cavia cobaya were divided into eight groups. The lower left incisor of each subject was extracted and induced with polyethylene glycol (PEG), propolis extract + PEG, BBG + PEG, combination of propolis extract + BBG + PEG at a concentration of 2% active substance. Experimental subjects were sacrificed on days 3 and 7. Histopathological examination with a microscope at 400x magnification was conducted to calculate the quantity of fibroblasts, osteoblasts, and osteoclasts. Statistical analysis was performed by one-way ANOVA and Tukey HSD tests. Results: The highest average quantity of fibroblasts and osteoblasts and the lowest average quantity of osteoclasts occurred in the group to which a combination of propolis extract and BBG had been administered on both days 3 and 7. According to the statistical analysis results, all the treatment groups recorded a significant difference in the quantity of fibroblasts, osteoblasts, and osteoclasts with a p value: 0.000 (p<0.05). Conclusion: A combination of propolis extract and BBG can increase the quantity of fibroblast and osteoblast cells, while reducing the number of osteoclast cells in tooth extraction sockets treated with 2% concentration of the active substance.

scholarly journals Adenovirus-Mediated FasL Minigene Transfer Endows Transduced Cells with Killer Potential

2020 ◽  
Vol 21 (17) ◽  
pp. 6011 ◽  
Author(s):  
Madalina Dumitrescu ◽  
Violeta Georgeta Trusca ◽  
Lorand Savu ◽  
Ioana Georgeta Stancu ◽  
Attila Cristian Ratiu ◽  
...  
Keyword(s):  
Fas Ligand ◽  
Type I Diabetes ◽  
Adenovirus Vector ◽  
Type I ◽  
Fasl Expression ◽  
Tnf Superfamily ◽  
Size Limitation ◽  
Fasl Gene ◽  
Induced Apoptosis ◽  
Necrosis Factor

Fas ligand (First apoptosis signal ligand, FasL, also known as CD95L) is the common executioner of apoptosis within the tumor necrosis factor (TNF) superfamily. We aimed to induce functional FasL expression in transduced cells using an adenovirus vector, which has the advantage of strong and transient induction of the gene included in the adenoviral genome. Here, we report that the adenovirus carrying a truncated FasL gene, named FasL minigene, encoding the full-length FasL protein (Ad-gFasL) is more efficient than the adenovirus carrying FasL cDNA (Ad-cFasL) in the induction of FasL expression in transduced cells. FasL minigene (2887 bp) lacking the second intron and a part of the 3′-UTR was created to reduce the gene length due to the size limitation of the adenoviral genome. The results show that, in transduced hepatocytes, strong expression of mRNA FasL appeared after 10 h for Ad-gFasL, while for Ad-cFasL, a faint expression appeared after 16 h. For Ad-gFasL, the protein expression was noticed starting with 0.5 transfection units (TU)/cell, while for Ad-cFasL, it could not be revealed. FasL-expressing endothelial cells induced apoptosis of A20 cells in co-culture experiments. FasL-expressing cells may be exploitable in various autoimmune diseases such as graft-versus-host disease, chronic colitis, and type I diabetes.

scholarly journals Application of pomegranate (Punica granatum Linn.) fruit extract for accelerating post-tooth extraction wound healing

2018 ◽  
Vol 51 (4) ◽  
pp. 189
Author(s):  
Intan Nirwana
Keyword(s):  
Wound Healing ◽  
Growth Factor ◽  
Treatment Group ◽  
Tooth Extraction ◽  
Transforming Growth Factor ◽  
Healing Process ◽  
Punica Granatum ◽  
Control Group ◽  
Wound Healing Process ◽  
Significant Difference

Background: Trauma occurring during tooth extraction can cause complications such as bleeding, infection, fracture and dry socket and constitutes an inflammatory response trigger. Pomegranate (Punica granatum Linn.) extract, which contains large amounts of punicallagin and ellagic acid, possesses various qualities, including; anti-inflammatory, anti-bacterial and anti-oxidant. Pomegranate extract can inhibit proinflammatory cytokine production, while also suppressing inflammation response thereby accelerating wound healing. Purpose: This study aimed to analyze the effect of pomegranate extract application to the tooth extraction wounds of Cavia cobaya (C. cobaya) on the expression of fibroblast growth factor-2 (FGF-2) and transforming growth factor β (TGF-β) on the fourth day of the wound-healing process. Methods: This study used 12 C. cobaya, divided into two groups, namely; control and treatment. The subjects were anesthetized, before their lower left central incisor was extracted and the entire socket filled with CMC-Na 3% in members of the control group and pomegranate extract in those of the treatment group. The twelve C. cobaya were sacrificed on day 4, their lower jaw subsequently being removed and decalcified for approximately 30 days. The mandibula tissue was stained using a immunohistochemical technique. FGF-2 and TGF-β were used to evaluate the healing process in the extracted tooth socket. Differences in the expression of FGF-2 and TGF-β were evaluated statistically by means of a t-test. Results: This study indicated a significant difference between the control and the treatment groups (p<0.05). The treatment group members whose sockets were filled with pomegranate extract showed high FGF-2 and TGF-β expression. Conclusion: This study confirmed that the administration of pomegranate extract to post-extraction tooth wounds of C. cobaya increases the expression of FGF-2 and TGF-β on day 4, thereby accelerating the wound healing process.

scholarly journals Hubungan antara Menopouse dengan Proses Penyembuhan Luka Paska Pencabutan Gigi di Klinik Gigi Universitas Wijaya Kusuma Surabaya

2018 ◽  
Vol 5 (1) ◽  
pp. 49
Author(s):  
Wahyuni Dyah Parmasari ◽  
Theodora Theodora ◽  
Enny Willianti
Keyword(s):  
Wound Healing ◽  
Oral Health ◽  
Tooth Extraction ◽  
Healing Process ◽  
Wound Healing Process ◽  
Delayed Wound Healing ◽  
The Third ◽  
Significant Difference ◽  
Main Factors ◽  
Experimental Use

Backgrounds : In medicine faculty specially in oral health university of Wijaya Kusuma Surabaya, extracting is the most common cases in clinic. As we know geriatry patients needs this treats too. The newest reports explain that estrogenes affected production of collaagens. Collagens are needed for asselarate wound healing. Menopause process decrease production of estrogen, so it can be influance for collagens output product.Purpose : This experimental to discribe the connection between menopause with clinical wound  healing process after tooth extraction at the Poli Gigi Universitas Wijaya Kusuma Surabaya. Methodes : This experimental use wound healing scale use parameters Tumor (swelling), Rubor (hyperemia) and Dolor (pain) Results : In this study used 20 patients divided two groups, menopause and non menopause group. There was a significant difference between menopause group and non menopause group in the third day and the fifth day after tooth extracted. For geriatry patients need dental care, specially tooth extraction. The complication in this age is delayed wound healing. For woman cases has many degeneration problems, one of this is because oldery ages woman has fisiology prosess menopause periode. Menopause is a regeneration process makes ovarium stops producting ovum. It was effected for maturation ovum and distrubing production of collagens. Collagens have main factors for wound healing process. In this articles, writer tried to connected the relations delayed wound healing in woman that have been in menopause period in case extracted teeth. Conclusion : There is a significant different between wound healing menopause and non menopause. The menopause the process wound healing takes more longer than non menopause.

scholarly journals Octacalcium phosphate/gelatin composite facilitates bone regeneration of critical-sized mandibular defects in rats: A quantitative study

2019 ◽  
Vol 13 (4) ◽  
pp. 258-266
Author(s):  
Fereydoon Sargolzaei-Aval ◽  
Eshagh Ali Saberi ◽  
Mohammad Reza Arab ◽  
Narjes Sargolzaei ◽  
Tayebeh Sanchooli ◽  
...  
Keyword(s):  
Bone Regeneration ◽  
Volume Fraction ◽  
Healing Process ◽  
Octacalcium Phosphate ◽  
Bone Defects ◽  
Control Group ◽  
Sprague Dawley ◽  
Mandibular Bone ◽  
Significance Level ◽  
Significant Difference

Background. Regeneration of bone defects remains a challenge for maxillofacial surgeons. The present study aimed to compare the effects of octacalcium phosphate (OCP) and the combination of octacalcium phosphate/gelatin (OCP/Gel) on mandibular bone regeneration in rats Methods. In the present study, 36 male Sprague-Dawley rats were used. The animals were randomly assigned to the following experimental groups: OCP (n=12), OCP/Gel (n=12), and the control group (n=12). Defects were created in the rat mandibles and filled with 10 mg of OCP and OCP/Gel disks in the experimental groups. In the control group, however, no substance was administered. Samples were taken on days 7, 14, 21 and 56, respectively, after the implantation. Sections (5 µ) were prepared and stained by H&E. The sections were studied, and the volume fraction of newly formed bone was measured by Dunnett's T3 test based on the significance level (P=0.05). Results. In the experimental groups, the new bone formation began from the margin of defects 7‒14 days after the implantation. During the healing process, the newly formed bone healed a larger area of the defects and grew structurally. In the control group, the defects were primarily filled with dense connective tissue, and only a small amount of new bone was formed. The present study showed a statistically significant difference in the volume of newly formed bone between the experimental groups and the control group (P<0.001). Conclusion. OCP/Gel composite can be beneficial in the healing process of mandibular bone defects.

scholarly journals THE EFFECTIVITY OF SCAFFOLD FROM ANADARA GRANOSA SHELL-STICHOPUS HERMANNI ON BLOOD VESSEL COUNTS AFTER TOOTH EXTRACTION

2021 ◽  
Vol 8 (2) ◽  
pp. 11
Author(s):  
Rima Parwati Sari ◽  
Chaterina Dyah Nanik Kusumawardani ◽  
Retno Pudji Rahayu ◽  
Sri Agoes Soedjarwo ◽  
Dian Widya Damaiyanti
Keyword(s):  
Blood Vessel ◽  
Group Treatment ◽  
Tooth Extraction ◽  
Alveolar Bone ◽  
Healing Process ◽  
Study Groups ◽  
Control Group ◽  
Freeze Dried ◽  
Significant Difference ◽  
Anadara Granosa

ABSTRACTBackground: Alveolar bone resorption can occur after tooth extraction. One source of bone scaffold material is hydroxyapatite and tricalcium phosphate (HA-TCP). The shell of Anadara granosa can be synthesized to be HA-TCP. Hyaluronic acid, which is widely contained in Stichopus hermanni, can stimulate endothelial progenitor cells for the healing process. Purpose: This research aims to prove the Effectivity of scaffold from Anadara granosa shell-Stichopus hermanni on blood vessel counts after tooth extraction. Methods: The sample in this study was male Wistar rats divided into four study groups randomly. Each group consists of 6 rats. Extraction was carried out on the mandibular first incisor, then was given gelatin as a placebo in the control group, treatment groups given scaffold from Anadara granosa shells (AG), and scaffold combination from Anadara granosa shells-Stichopus hermanni with concentrations of 0.4%-0.8%. (AGSH1-AGSH2). Development of HA-TCP synthesized from Anadara granosa combined with Stichopus hermanni extract for biomedical scaffolds using the freeze-dried method. Observations were made three days after tooth extraction. Data analysis has used one-way ANOVA followed by Tukey HSD (p<0.05). Results: The results of the ANOVA test followed by the HSD-Tukey test showed a significant difference between C (7.33±1.51) and AGSH1 (11.50±1.38), AGSH2 (21.17±1.94), AG (9.33±1.63) and AGSH1 with AGSH2, but between AG and, AGSH1 no significant differences.Conclusions: Combination scaffold from Anadara granosa shell and Stichopus hermanni 0.8% effectively increased blood vessel counts after tooth extraction.

scholarly journals The effect of Persea americana Mill. seed extract on inflammatory cells and fibroblast formation in tooth extraction socket healing

2021 ◽  
Vol 54 (4) ◽  
pp. 190
Author(s):  
Yessy Ariesanti ◽  
Irvan Septrian Syah Putra Rasad ◽  
Maylan Nimas ◽  
Nadira Syabilla
Keyword(s):  
Wound Healing ◽  
Tooth Extraction ◽  
Healing Process ◽  
Inflammatory Cells ◽  
Seed Extract ◽  
Persea Americana ◽  
Control Group ◽  
Extraction Socket ◽  
Significant Difference ◽  
Socket Healing

Background: Inflammatory cells and fibroblasts have an essential role in the wound healing process. Persea americana Mill. seed categorises as a waste; it contains rich nutrients that can accelerate wound healing activity. Purpose: This study aims to determine the effect of Persea americana Mill. seed against inflammatory cells and fibroblast formation in tooth extraction socket healing. Methods: Ninety-six Sprague Dawley rats had their lower left molars removed. Forty-eight rats tested for inflammatory cells were divided into four groups: negative control group (IC1), positive control group (IC2), Persea americana Mill. seed extract concentrations of 50% (IE1) and 90% (IE2). Another 48 rats used for fibroblast were divided into three groups: the control group (FC1), Persea americana Mill. seed concentrations of 50% (FE1) and 90% (FE2). The gel was applied to the socket under general anaesthesia. Four rats from each group were decapitated for histopathological tissue preparations with Haematoxylin Eosin (HE) staining on the 3rd, 5th and 7th days for inflammatory cells and the 3rd, 5th, 7th and 14th days for fibroblast formation. The preparations for each research were scored under the microscope at 40x magnification. The obtained data was analysed using the Kruska—Wallis and the Mann—Whitney test. Results: A significant decrease (p<0.05) of inflammatory cells in IE2 on the 5th and 7th day. A significant increase (p<0.05) of fibroblast formation between treatment and control groups and no significant difference (p>0.05) between FE1 and FE2 was based on the interval days. Conclusion: Persea americana Mill. seed extract can decrease the inflammatory cells and accelerate the fibroblast formation in tooth extraction socket healing.

scholarly journals Effects of Soft Tissue Closure on Medication-Related Osteonecrosis of the Jaw in a Rabbit Model with Tooth Extraction: A Pilot Study

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Ru Qing Yu ◽  
Jing Wen Li ◽  
Jing Yi Wang ◽  
Lei Huo ◽  
Li Wu Zheng
Keyword(s):  
Soft Tissue ◽  
Growth Rates ◽  
Tooth Extraction ◽  
Bone Growth ◽  
Rabbit Model ◽  
Treated Group ◽  
Osteonecrosis Of The Jaw ◽  
Control Group ◽  
Trabecular Thickness ◽  
Significant Difference

Objectives. The study investigated the effect of soft tissue closure after tooth extraction on the prevention of medication-related osteonecrosis of the jaw in a rabbit model. Materials and Methods. Twenty female New Zealand white rabbits were randomly assigned into the experimental group administrated with zoledronic acid (ZA) and control groups treated with saline. Bilateral lower premolar extraction was performed 4 weeks after ZA/saline administration. Immediately after extraction, the wound on the right mandible was closed by suture while the other side was left open. Animals were sacrificed 4 weeks and 8 weeks after tooth extraction. Fluorochrome labeling solutions were injected subcutaneously to evaluate the bone growth rates. The mandibles were harvested and subjected for microcomputed tomography, confocal microscope, and histomorphological examinations. Results. All extraction sites healed well without any signs of infection. Trabecular thickness (Tb.Th) was significantly higher in the ZA-treated group than in the control group at both week 4 and week 8, while no significant difference was detected in the rest of the assessed parameters. The bone growth rate in mandibles showed gradual reduction in the ZA-treated group. Histological analysis showed that at week 8, the animals in the ZA-treated group had significantly higher incidence of osteonecrosis than that in the control group, while no significance was revealed between the sutured and nonsutured side. Conclusions. ZA treatment significantly reduces bone growth rates but does not reveal a significant effect on bone mineral density and bone microarchitecture. Soft tissue closure of the extraction socket does not reduce the incidence of ONJ in the ZA-treated rabbit model.

scholarly journals Frequency of inflammatory complications following surgical tooth extraction and the efficiency of postoperative protocols for their prevention

2020 ◽  
Vol 71 (2) ◽  
pp. 14-20
Author(s):  
Tamara Đurić ◽  
Ana Tadić
Keyword(s):  
Tooth Extraction ◽  
Oral Surgery ◽  
Healing Process ◽  
Clinical Signs ◽  
Surgical Site Infections ◽  
Control Group ◽  
Treatment Type ◽  
Significant Difference ◽  
Alveolar Osteitis ◽  
The Impact

Introduction: Surgical tooth extraction is one of the most common surgical procedures in oral surgery nowadays. The post-extraction period is usually uneventful, however, in some cases, the healing process may be affected by the extraction trauma or by the impact of bacteria at the surgical site. Aim: The aim of this paper is to establish the frequency of inflammatory complications, specifically surgical site infections and alveolar osteitis, after surgical extractions, and to explore the impact of antiseptics and antibiotics regarding the prevention of these complications. Material and methods: A number of 60 patients was included in this research, divided into three research groups according to the post-operative treatment type prescribed. The first group consisted of the patients who had been prescribed antibiotics, while the second group consisted of the patients who had been instructed to rinse their mouth with 0.12% chlorhexidine digluconate rinse postoperatively. Control group consisted of the patients who had not been prescribed any treatment. The postoperative check-ups were done on the second and the seventh day after the surgery, where it was checked if there were any clinical signs of infection or alveolar osteitis at the surgical site. Results: The study consisted of 60 patients, out of which a total of 67 teeth were extracted. Two patients were diagnosed alveolar osteitis, while four patients were diagnosed postoperative infection Conclusion: Statistically significant difference between the participant groups regarding the frequency of postoperative complications has not been noticed. There is insufficient evidence to justify the routine use of antibiotics or antiseptics after surgical tooth extractions.

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