scholarly journals Histological changes during orthodontic tooth movement due to hyperbaric oxygen therapy

2017 ◽  
Vol 49 (2) ◽  
pp. 63
Author(s):  
Arya Brahmanta ◽  
Sutjipto Sutjipto ◽  
Ida Bagus Narmada

Background: Mechanical force of orthodontics causes changes in periodontal ligament vascularization and blood flow, resulting in biochemical and cellular changes as well as changes in the contour of the alveolar bone and in the thickness of the periodontal ligaments. Hyperbaric oxygen (HBO) therapy is one of many solutions stimulating the growth of new blood vessels and increasing tissue oxygenation. Thus, HBO plays a role in recovery of periodontal ligament and osteoblasts. Purpose: This study aimed to determine the effects of HBO therapy for seven days on periodontal ligament size and osteoblast number in the tension site during bone remodeling in tooth movement. Method: The study was true experimental laboratories with completely randomized control group post test only design. Twenty-four males guinea pigs were randomly divided into three groups. K0 was the control group without any treatment, K1 was the group given a mechanical orthodontic pressure, and K2 was the group treated with the addition of hyperbaric oxygen therapy. The maxillary incisors were moved distally by elastic separator. After HBO therapy on day 7, all of the groups were sacrificed, and then periodontal ligament size and osteoblast number were analyzed by one-way Anova and LSD statistical tests. Result: The results showed significant differences in the size of the periodontal ligament and the number of osteoblasts in the tension site among the groups (p<0.05). Conclusion: HBO therapy at 2.4 ATA for 7 days is effective in recovery of periodontal ligament and increased osteoblast number during bone remodeling in tension area of orthodontic tooth movement.

DENTA ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Arya Barahmanta ◽  
Muhammad Faizal Winaris ◽  
Pambudi Raharjo

<p><strong><em>Background:</em></strong><em> Orthodontic tooth movement is a </em><em>interaction prosess</em><em> of resorption and deposition of bone remodeling. Orthodontic tooth movement by mechanical strength causes changes in alveolar bone. Osteocyte is an essential cell to respond bone remodelling. Hyperbaric Oxygen Therapy affects production of osteocyte because it can release Reactive Oxygen Species (ROS) and Nitrid Oxide (NO).  <strong>Purpose: </strong>To determine the difference number  of osteocyte in pressure and tension area during tooth movement by adjuvant of Hyperbaric Oxygen 2,4 ATA during 7 days starting on day 8 to day 14. <strong>Materials and Methods</strong>: This research used Completery Randomized Control Group Post Test Only Design. 36 cavia cobaya (male)  were divided into 3 groups randomly : the negative control groups, positive control group, and treatment group. Preparat staining used Hematoxylin Eosin (HE) and calculated on microscop 1000x with 20 field of view. Data analyses used one way ANOVA and LSD test then compared each area by using paired T test. <strong>Result:</strong> The data showed that the treatment group (P=10,67) tension area has the highest number of osteocyte than  negative control group (K-=3,67), positive control (K+=7,42). In the pressure area showed that negative control group (K-=5,00) has the highest  than positive control group (K+=3,83) and treatment (P=3,25). <strong>Conclusion: </strong>Therapy HBO 2,4 ATA 7 days starting on day 8 to day 14 is could increase osteocyte in the tissue to stimulate process of bone remodelling.</em></p><pre><strong> </strong></pre><p><strong><em>Keywords:</em></strong><em> Hyperbaric Oxygen, Tooth movement, Bone remodeling, </em><em>Osteocyte</em><em></em></p><p><em> </em></p><p><strong><em>Correspondence:</em></strong><em> </em><em>Arya Brahmanta</em><em>, Department of Orthodonty, Faculty of Dentistry, Hang Tuah University, Arif Rahman Hakim 150, Surabaya, Phone 031-5945864, Email:</em><em> </em><a href="mailto:[email protected]"><em>arya.brahmanta</em><em>@</em><em>hangtuah.ac.id</em></a></p>


DENTA ◽  
2019 ◽  
Vol 13 (1) ◽  
Author(s):  
Pambudi Rahardjo ◽  
Maria Lisdiana Tandjung ◽  
Dandy Bayu Angkasa

<strong><em>Background</em></strong><em>: The mechanical force of orthodontic device causes occurrence of a tension and a pressure area in the periodontal ligament. In the tension area, an inflammatory response characterized by vasodilation of blood vessels will occur. The function of blood vessel is to flow blood and other nutrients to accelerate the periodontal ligament remodeling process, so that relapse can be prevented. <strong>Objective:</strong> To determine the effect of combination of propolis 3%, 5% for 14 days and HBOT 2,4 ATA 3x30 minutes with 5 minutes interval for 7 days in the tension area of the periodontal ligament as an effort to prevent relapse. <strong>Materials and Methods</strong>: A randomized post-test only control group design was used in this study. 42 male guinea pigs (cavia cobaya) are divided into 7 groups K- (without treatment), K + (using separator), P1 (using separator and propolis extract 3%), P2 (using separator and propolis extract 5%), P3 (using separator and hyperbaric oxygen therapy), P4 (using separator and combination of hyperbaric oxygen therapy and 3% propolis extract), and P5 (using separator and combination of hyperbaric oxygen therapy and 5% propolis extract) . <strong>Results</strong>: Data shows that mean of diameter of blood vessels increased from the smallest K- (41,8417±0,84511), K+(61,77±1,254482), P1(72,5983±0,68869), P2(73,2333±1,24481), P3(74,2583± 0,62030), P4(91,47±0,76585), to the largest in P5(91,5483±0,96178). One-way Anova and LSD test showed significant differences in blood vessels diameter (p &lt;0.05). <strong>Conclusion</strong>: The combination of propolis 3% and 5% and HBOT have significant effect in increasing blood vessels diameter in the tension area of the periodontal ligament</em>


Trials ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
M. C. T. Batenburg ◽  
H. J. G. D. van den Bongard ◽  
C. E. Kleynen ◽  
W. Maarse ◽  
A. Witkamp ◽  
...  

Abstract Background Breast cancer treatment with radiotherapy can induce late radiation toxicity, characterized by pain, fibrosis, edema, impaired arm mobility, and poor cosmetic outcome. Hyperbaric oxygen therapy (HBOT) has been proposed as treatment for late radiation toxicity; however, high-level evidence of effectiveness is lacking. As HBOT is standard treatment and reimbursed by insurers, performing classic randomized controlled trials is difficult. The “Hyperbaric OxygeN therapy on brEast cancer patients with late radiation toxicity” (HONEY) trial aims to evaluate the effectiveness of HBOT on late radiation toxicity in breast cancer patients using the trial within cohorts (TwiCs) design. Methods The HONEY trial will be conducted within the Utrecht cohort for Multiple BREast cancer intervention studies and Long-term evaluation (UMBRELLA). Within UMBRELLA, breast cancer patients referred for radiotherapy to the University Medical Centre Utrecht are eligible for inclusion. Patients consent to collection of clinical data and patient-reported outcomes and provide broad consent for randomization into future intervention studies. Patients who meet the HONEY in- and exclusion criteria (participation ≥ 12 months in UMBRELLA, moderate/severe breast or chest wall pain, completed primary breast cancer treatment except hormonal treatment, no prior treatment with HBOT, no contraindications for HBOT, no clinical signs of metastatic or recurrent disease) will be randomized to HBOT or control group on a 2:1 ratio (n = 120). Patients in the control group will not be informed about participation in the trial. Patients in the intervention arm will undergo 30–40 HBOT treatment sessions in a high pressure chamber (2.4 atmospheres absolute) where they inhale 100% oxygen through a mask. Cohort outcome measures (i.e., physical outcomes, quality of life, fatigue, and cosmetic satisfaction) of the HBOT group will be compared to the control group at 3 months follow-up. Discussion This pragmatic trial within the UMBELLA cohort was designed to evaluate the effectiveness of HBOT on late radiation toxicity in breast cancer patients using the TwiCs design. Use of the TwiCs design is expected to address issues encountered in classic randomized controlled trials, such as contamination (i.e., HBOT in the control group) and disappointment bias, and generate information about acceptability of HBOT. Trial registration ClinicalTrials.gov. NCT04193722. Registered on 10 December 2019.


2020 ◽  
Vol 48 (10) ◽  
pp. 030006052093982
Author(s):  
Xianliang Zhong ◽  
Aijun Shan ◽  
Jianzhong Xu ◽  
Jian Liang ◽  
Ying Long ◽  
...  

Objective The present study aimed to explore the effects of hyperbaric oxygen therapy on the prognosis and neurological function of patients with severe traumatic brain injury. Methods A prospective study was carried out in 88 patients diagnosed with severe brain injury at our hospital and they were enrolled as research participants and randomly assigned to control and experimental groups (n = 44 per group) using a random number table method. Both groups underwent routine treatment. Patients in the experimental group were administered hyperbaric oxygen therapy approximately 1 week after admission when their vital signs had stabilized. Results No significant intergroup differences were observed in the Glasgow Coma Scale (GCS) and U.S. National Institutes of Health Stroke Scale (NIHSS) scores before treatment. However, after oxygen treatment, compared with the control group, the experimental group showed higher GCS and lower NIHSS scores. The GCS score at admission, tracheotomy status, and first hyperbaric oxygen therapy duration were independent prognostic factors in patients with severe traumatic brain injury. Conclusion Hyperbaric oxygen therapy may promote recovery of neurological function and improve the cognitive function and prognosis of patients with severe traumatic brain injury.


2013 ◽  
Vol 98 (1) ◽  
pp. 33-42 ◽  
Author(s):  
Ramazan Yildiz ◽  
Mehmet Fatih Can ◽  
Gokhan Yagci ◽  
Taner Ozgurtas ◽  
Metin Guden ◽  
...  

Abstract The aim of the present study was to investigate the effect of hyperbaric oxygen therapy (HBOT) on colon anastomosis after chemoradiotherapy (CRT). Sixty female Wistar-Albino rats were divided into 5 groups and underwent left colon resection and end-to-end anastomosis. CRT simulation was performed on 2 sham groups before the anastomosis, and 1 of these groups was administered additional postoperative HBOT. Two groups were administered CRT before the anastomosis, and 1 of them received additional postoperative HBOT. On postoperative day 5, all groups underwent relaparotomy; burst pressure was measured and samples were obtained for histopathologic and biochemical analysis. There was a significant weight loss in the CRT groups and postoperative HBOT had an improving effect. Significantly decreased burst pressure values increased up to the levels of the controls after HBOT. Hydroxyproline levels were elevated in all groups compared to the control group. Hydroxyproline levels decreased with HBOT after CRT. No significant difference was observed between the groups regarding fibrosis formation at the anastomosis site. However, regression was observed in fibrosis in the group receiving HBOT after CRT. Preoperative CRT affected anastomosis and wound healing unfavorably. These unfavorable effects were alleviated by postoperative HBOT. HBOT improved the mechanical and biochemical parameters of colon anastomosis in rats.


2017 ◽  
Vol 758 ◽  
pp. 255-263 ◽  
Author(s):  
Ananto Ali Alhasyimi ◽  
Pinandi Sri Pudyani ◽  
Widya Asmara ◽  
Ika Dewi Ana

Relapse is considered a significant failure after orthodontic treatment. In response to relapse, RANKL expressions will increase, while OPG expressions will decrease. CHA is thought to be one of an ideal candidate for enhancing bone formation. Moreover, a-PRF is a source high levels of growth factors that play a central role in the bone remodeling. This research was intended to investigate the effect of hydrogel CHA-aPRF in preventing relapse. Hydrogel-CHA was initially designed, with its degradation profile and FTIR (Fourie’s Transform Infrared) spectra were investigated as the basis to find out optimum formulation before incorporated with aPRF. Hydrogel-CHA microspheres were prepared in 3 different compositions: those were encoded 30-CHA, 40-CHA, and 50-CHA. After the hydrogel formulation and characterization were completed, 10 mL blood samples were collected, then centrifuged at 1500 rpm for 14 min. At the end of the centrifugation process, the aPRF clot was isolated and then pressed to obtain their releasate. The releasate aPRF was then loaded into the best formulation candidate of hydrogel CHA. The hydrogel incorporated aPRF was then gently injected on the mesial side of incisor gingival sulcus of the rabbit after orthodontic tooth movement. The FTIR analysis showed that carbonated apatite was successfully developed during the fabrication process of hydrogel-CHA microspheres. It was also known that degradation profile of 30-CHA was considered ideal compared to the other compositions. The application of CHA-aPRF (group C) was proven to significantly prevent relapse, indicated by lowest percentage of relapse 21 days after debonding (29.95±3.91%) compared to control group. Furthermore, it has been found that expressions of RANKL were significantly lowest (p<0.05) in group C on day 0, 3, and 7, while OPG expressions showed significantly highest (p<0.05) in group C on day 14 and 21 after debonding. These results indicate that incorporation of hydrogel-CHA has potential effect to enhance alveolar bone remodeling and prevent orthodontic relapse by stimulates OPG expression and suppresses RANKL expression.


DENTA ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 36
Author(s):  
Agni Febrina Pargaputri ◽  
Dwi Andriani

<p><strong><em> </em></strong></p><p><strong><em>Background: </em></strong><em>Oral candidiasis generally caused by Candida albicans with prevalence of 30-50%. C. Albicans proliferation in the oral cavity was canducted by decreasing immune system of the host. Lymphocytes activation in immune system happened when there is a contact between host cell with cell wall of C. albicans as a result of C. albicans antigen. One of therapy to suppress the Candida infection sistemically is by giving hyperbaric oxygen therapy. <strong>Purpose: </strong>To determine the effects of giving hyperbaric oxygen therapy to the amount of lymphocytes in oral candidiasis immunosuppressed models. <strong>Methods:</strong> This research was post test only control group design. We used 12 wistar rats which were divided into 3 groups(n=4/3): K-(normal/ healthy wistar rats), K+(oral candidiasis immunosuppressed wistar rats), P1(oral candidiasis immunosuppressed wistar rats which were given hyperbaric oxygen therapy 5 days). K+ and P1 groups were immunosuppressed by giving dexamethasone 0,5mg/day/rat orally for 14 days, added with tetrasiklin 1 mg/day/rat. On the 3rd day immunosuppression, the rats were inducted with C.albicans smeared in the dorsum linguae once every two days for 12 days. <strong>Results:</strong> The data were analyzed with one way Anova test and showed significant difference among groups (p&lt;0,05). To show the difference between each groups we used LSD test and showed significant difference (p&lt;0,05) between K+ compared with P1, and K+ compared with K-. <strong>Conclusion:</strong> Hyperbaric oxygen therapy gives effect to the amount of lymphocytes in oral candidiasis immunosuppressed models.</em></p><p><em> </em><strong><em>Keywords:</em></strong><em> Oral candidiasis, immunosuppressed, hyperbaric oxygen therapy, lymphocytes</em></p><p> <strong><em>Correspondence</em></strong><strong><em>: </em></strong><em>Agni Febrina Pargaputri</em><em>, Departmen</em><em>t of</em><em> Oral </em><em>Biology </em><em>F</em><em>aculty of</em><em> </em><em>Dentistry</em><em>, Jl. Arif Rahman Hakim 150, Surabaya, Indonesia. </em><em>Phone:</em><em> 031-5945864, fax: 031-5912191, Email: </em><em><span style="text-decoration: underline;">agni.febrina</span></em><em><span style="text-decoration: underline;">@hangtuah.ac.id</span></em></p><p> </p>


2019 ◽  
Author(s):  
Jocefabia Reika Alves Lopes ◽  
Mariza D’Agostino Dias ◽  
João Antonio Correa ◽  
Maria Alice Bragagnolo Batalha ◽  
Luanda Karla Dantas Guerra

Abstract Background: Diabetic limb ulcers are highly prevalent and contribute to a significant increase in cost for the treatment of these patients in health services. However, healing of these wounds is a major health problem and may even lead to amputation. The aim of the current study is to evaluate the efficacy of hyperbaric oxygen therapy (HBOT) in facilitating the healing of diabetic foot ulcers and reducing the number of amputations in these patients.Methods : The study will be conducted in the city of Imperatriz, Maranhão from 2019 to 2020, in diabetic patients with chronic foot ulcers (classified as Wagner grade 2, 3, and 4, persisting for more than one month). The outpatient follow-up for diabetic foot patients will be done at the SUS (Unified Health System), with a sample size of 120 patients (60 patients for each arm). Half of the patients will receive standard treatment, i.e. dressings, debridement, antibiotics, and load relief, along with HBOT (HBOT group), and the other half will receive only standard treatment (control group). The patients of the HBOT group will be evaluated upon admission, after 10, 20, 30 and 35 HBOT sessions, and after six months. The patients of the control group will also be evaluated at equivalent periods. The progression of the wounds and specific treatment, such as appropriate bandage, antibiotic therapy, or need of some surgical intervention will be evaluated on a weekly basis. The SF-36 quality of life questionnaire will be filled upon admission and after three months of follow-up in both groups. Upon admission, the patients of both groups will undergo arterial Doppler ultrasound, and laboratory tests–complete blood count, erythrocyte sedimentation rate, C-reactive protein, creatinine, fasting blood glucose, and glycosylated haemoglobin.Discussion : Diabetic foot ulcers are a highly prevalent complication of diabetes with serious consequences. A study to assess the efficacy of HBOT in healing the ulcers and reducing the rate of amputations in diabetic patients is justified, which will eventually aid in the development of guidelines for treating these ulcers.


2021 ◽  
Vol 12 ◽  
Author(s):  
Yukun Jiang ◽  
Yuzhe Guan ◽  
Yuanchen Lan ◽  
Shuo Chen ◽  
Tiancheng Li ◽  
...  

Orthodontic tooth movement (OTM) is a process depending on the remodeling of periodontal tissues surrounding the roots. Orthodontic forces trigger the conversion of mechanical stimuli into intercellular chemical signals within periodontal ligament (PDL) cells, activating alveolar bone remodeling, and thereby, initiating OTM. Recently, the mechanosensitive ion channel Piezo1 has been found to play pivotal roles in the different types of human cells by transforming external physical stimuli into intercellular chemical signals. However, the function of Piezo1 during the mechanotransduction process of PDL cells has rarely been reported. Herein, we established a rat OTM model to study the potential role of Piezo1 during the mechanotransduction process of PDL cells and investigate its effects on the tension side of alveolar bone remodeling. A total of 60 male Sprague-Dawley rats were randomly assigned into three groups: the OTM + inhibitor (INH) group, the OTM group, and the control (CON) group. Nickel-titanium orthodontic springs were applied to trigger tooth movement. Mice were sacrificed on days 0, 3, 7, and 14 after orthodontic movement for the radiographic, histological, immunohistochemical, and molecular biological analyses. Our results revealed that the Piezo1 channel was activated by orthodontic force and mainly expressed in the PDL cells during the whole tooth movement period. The activation of the Piezo1 channel was essential for maintaining the rate of orthodontic tooth movement and facilitation of new alveolar bone formation on the tension side. Reduced osteogenesis-associated transcription factors such as Runt-related transcription factor 2 (RUNX2), Osterix (OSX), and receptor activator of nuclear factor-kappa B ligand (RANKL)/osteoprotegerin (OPG) ratio were examined when the function of Piezo1 was inhibited. In summary, Piezo1 plays a critical role in mediating both the osteogenesis and osteoclastic activities on the tension side during OTM.


2007 ◽  
Vol 22 (2) ◽  
pp. 137-141 ◽  
Author(s):  
Ricardo Costa-Val ◽  
Tarcizo Afonso Nunes ◽  
Roberto Carlos de Oliveira e Silva ◽  
Antônio Francisco de Souza ◽  
Irene Edith de Puy e Souza ◽  
...  

PURPOSE: To research the hyperbaric oxygen therapy effects on rats' livers and spleens. METHODS: 30 adult male Hotzman rats were used, being randomly distributed, by raffle, into 2 groups of 15 animals each: group 1 - control; group 2 - hyperbaric oxygen therapy. Group-2 animals underwent hyperbaric oxygen therapy for 120 minutes daily, 90 minutes of which were under pressure of 2.5 atmospheres. The first and last 15 minutes were used for gradual compression and decompression, respectively, for 20 days in a row. The livers and spleens of the animals from the two groups were taken out for histologic examination, on the day after the end of hyperbaric oxygen therapy in group 2 animals. Liver and spleen histologic changes of the animals from the two groups were compared by using Fisher exact test. P < 0.05 was regarded as a significant difference. RESULTS: The only change in liver and spleen histology was the significant reduction in hepatic extramedullary erythropoiesis in the animals that underwent hyperbaric oxygen therapy (p < 0.05). CONCLUSION: Hyperbaric oxygen therapy reduces hepatic extramedullary erythropoiesis in rats and doesn't jeopardize the other liver and spleen structures.


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