The Administration of 4-Hexylresorcinol Accelerates Orthodontic Tooth Movement and Increases the Expression Level of Bone Turnover Markers in Ovariectomized Rats

Surgical methods for accelerating orthodontic tooth movement are limited by possible damage to the tooth root and patient discomfort. 4-Hexylresorcinol (4HR) has been shown to increase bone remodeling and may potentially facilitate tooth movement. This study investigated the (1) effect of 4HR administration on osteoblast-like cells and (2) effect of 4HR administration on tooth movement in ovariectomized rats. Saos-2 cells were treated with either 4HR or solvent (control). Protein expression levels were investigated 2, 8, and 24 h after treatment. Thirty ovariectomized Sprague-Dawley rats were divided into two experimental groups (A and B) and one control group. After installation of an orthodontic tooth movement device, groups A and B received subcutaneous weekly injections of 4HR (1.28 and 128 mg/kg). Micro-computerized tomography and histological analyses were performed after 2 weeks of tooth movement. The application of 4HR elevated expression of osteogenic markers in Saos-2 cells. Movement of the first molars was significantly greater in rats administered 4HR. Furthermore, the expression of bone morphogenic protein-2, receptor activator of nuclear factor kappa-B ligand, osteocalcin, and tartrate-resistant acid phosphatase were increased after 4HR administration. 4HR application demonstrated increased expression of osteogenic markers in Saos-2 cells and accelerated orthodontic tooth movement in rats.

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Raloxifene administration enhances retention in an orthodontic relapse model

European Journal of Orthodontics ◽

10.1093/ejo/cjaa008 ◽

2020 ◽

Vol 42 (4) ◽

pp. 371-377

Author(s):

Niloufar Azami ◽

Po-Jung Chen ◽

Shivam Mehta ◽

Zana Kalajzic ◽

Eliane H Dutra ◽

...

Keyword(s):

Alveolar Bone ◽

Tooth Movement ◽

Volume Fraction ◽

Orthodontic Tooth Movement ◽

Bone Volume ◽

Resin Cement ◽

Control Group ◽

Tartrate Resistant Acid Phosphatase ◽

Bone Volume Fraction ◽

Tissue Density

Abstract Background and objectives Orthodontic relapse is a physiologic process that involves remodelling of the alveolar bone and principle periodontal ligament fibres. Raloxifene is an Food and Drug Administration (FDA)-approved selective oestrogen receptor modulator that inhibits systemic bone loss. In our study, we examined the effects of Raloxifene on alveolar bone modelling and orthodontic relapse in a rodent model. Materials and methods The efficacy of raloxifene was evaluated in 15-week-old male Wistar rats, 8 in each group (Control, Raloxifene, Raloxifene + 7-day relapse, Raloxifene + 14-day relapse) for a total of 42 days. All animals had 14 days of orthodontic tooth movement with a closed nickel–titanium coil spring tied from incisors to right first molar applying 5–8 gm of force. On the day of appliance removal, impression was taken with silicon material and the distance between first molar and second molar was filled with light-cured adhesive resin cement for retention phase. Raloxifene Retention, Raloxifene Retention + 7D, Raloxifene Retention + 14D groups received 14 daily doses of raloxifene (2.0 mg/kg/day) subcutaneously after orthodontic tooth movement during retention. After 14 days of retention, the retainer was removed and right first molar was allowed to relapse for a period of 14 days. Raloxifene injection continued for the Raloxifene + 14-day relapse group during relapse phase too. Control group received saline injections during retention. Animals were euthanized by CO2 inhalation. The outcome measure included percentage of relapse, bone volume fraction, tissue density, and histology analysis using tartrate-resistant acid phosphatase staining and determining receptor activator of nuclear factor-кB-ligand (RANKL) and osteoprotegerin expression. Results Raloxifene Retention + 14D group had significantly less (P < 0.05) orthodontic relapse when compared with other groups. There was a significant increase (P < 0.05) in bone volume fraction and tissue density in the Raloxifene Retention + 14D group when compared with other groups. Similarly, there was significant decrease in number of osteoclasts and RANKL expression in Raloxifene Retention + 14D group when compared with Raloxifene Retention + 7D group (P < 0.05). Conclusion Raloxifene could decrease post-orthodontic treatment relapse by decreasing bone resorption and indirectly enhancing bone formation.

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The effects of binge-pattern alcohol consumption on orthodontic tooth movement

Dental Press Journal of Orthodontics ◽

10.1590/2176-9451.19.6.093-098.oar ◽

2014 ◽

Vol 19 (6) ◽

pp. 93-98 ◽

Cited By ~ 7

Author(s):

Cristiano Miranda de Araujo ◽

Aline Cristina Batista Rodrigues Johann ◽

Elisa Souza Camargo ◽

Orlando Motohiro Tanaka

Keyword(s):

Bone Resorption ◽

Saline Solution ◽

Tooth Movement ◽

Orthodontic Tooth Movement ◽

Control Group ◽

Tartrate Resistant Acid Phosphatase ◽

Chi Square ◽

Significance Level ◽

Male Wistar Rats ◽

Chi Square Test

OBJECTIVE: This study aimed to assess tissue changes during orthodontic movement after binge-pattern ethanol 20% exposure.METHODS: Male Wistar rats (n = 54) were divided into two groups. The control group (CG) received 0.9% saline solution, while the experimental group (EG) received 20% ethanol in 0.9% saline solution (3 g/kg/day). On the 30th day, a force of 25 cN was applied with a nickel-titanium closed coil spring to move the maxillary right first molar mesially. The groups were further divided into three subgroups (2, 14 and 28 days). Tartrate-resistant acid phosphatase and picrosirius were used to assess bone resorption and neoformation, respectively. Data were compared by two-way ANOVA, Tukey's HSD, Games-Howell and chi-square test. Significance level was set at 5%.RESULTS: There was a decrease in the number of osteoclasts in EG at day 28. The percentage of collagen showed no interaction between group and time.CONCLUSION: Binge-pattern 20% ethanol promoted less bone resorption at the end of tooth movement, thereby suggesting delay in tooth movement.

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Combined Effect of Nicotine and Caffeine on Orthodontic Tooth Movement in Rats

Journal of Islamabad Medical & Dental College ◽

10.35787/jimdc.v9i2.462 ◽

2020 ◽

Vol 9 (2) ◽

pp. 109-114

Author(s):

NAEEM MURTAZA ◽

WAHEED UL HAMID ◽

AHMAD SHAMIM ◽

SHABBIR HUSSAIN ◽

Muhammad Azeem ◽

...

Keyword(s):

Tooth Movement ◽

Orthodontic Tooth Movement ◽

Combined Effect ◽

Medical Institute ◽

Control Group ◽

P Value ◽

Sprague Dawley ◽

Sprague Dawley Rats ◽

The Mean ◽

Animal House

Background: The individual effects of nicotine and caffeine have been reported in previous studies but their combined effect on tooth movement needs to be elucidated. The objective of this study was to evaluate the combined effect of nicotine and caffeine on the magnitude of orthodontic tooth movement (OTM) in rats. Material and Methods: This experimental study was conducted on Sprague-Dawley rats (Animal House and Pathology Laboratory; Post Graduate Medical Institute, Lahore) in the department of Orthodontics, de’Montmorency College of Dentistry, Lahore from 8th July 2014 to 8th January 2015. Forty male Sprague-Dawley rats were divided into four equal groups: Control group (CR), nicotine group (NT), caffeine group (CF) and combined nicotine and caffeine group (CNC). Closed coil nickel titanium (NiTi) spring was placed between incisor and maxillary molar. Nicotine group (NT) was treated by intraperitoneal injections of nicotine. Caffeine was given to caffeine group and Combined nicotine and caffeine group (CNC) was treated in the same way as individual nicotine and caffeine groups daily for 14 days. All the rats were sacrificed on 15th day. Magnitude of the orthodontic tooth movement was measured using digital Vernier caliper. Means and standard deviation were calculated for orthodontic tooth movement. One-way ANOVA was used to determine the mean difference in OTM. Post hoc Tukey test was used for multiple comparisons among the groups. Results: The mean orthodontic tooth movement (OTM) was 0.32 mm ± 0.05 in control group, 0.56 mm ± 0.04 in nicotine group, 0.52 mm ± 0.034 in caffeine group and 0.8 mm ± 0.06 in combined NC group, respectively. The difference between mean OTM among the groups was statistically significant (P-value <0.001). The mean OTM in CNC group was significantly higher as compared to other groups (CR, NT, CF, NT) (P-value <0.001). Conclusions: In rats, the combined use of nicotine and caffeine results in greater orthodontic tooth movement as compared to their individual use.

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Emotional Stress- and Pain-Related Behaviors Evoked by Experimental Tooth Movement

The Angle Orthodontist ◽

10.2319/040207-165.1 ◽

2008 ◽

Vol 78 (3) ◽

pp. 487-494 ◽

Cited By ~ 13

Author(s):

Joseph H. Yozgatian ◽

Jorge L. Zeredo ◽

Hitoshi Hotokezaka ◽

Yoshiyuki Koga ◽

Kazuo Toda ◽

...

Keyword(s):

Open Field ◽

Emotional Stress ◽

Tooth Movement ◽

Orthodontic Tooth Movement ◽

Control Group ◽

Sprague Dawley ◽

Sprague Dawley Rats ◽

Animal Activity ◽

Experimental Group ◽

Experimental Tooth Movement

Abstract Objective: To investigate by behavioral methods the relationship between emotional stress and pain during experimental tooth movement in rats. Materials and Methods: Sixteen male Sprague-Dawley rats (210 to 250 g) were divided into two groups. The experimental group was treated with an active Ti-Ni appliance, and the control group received a passive appliance. A force of 20 gf was delivered by the active appliance between the maxillary first and second molars for 3 days. During this period the rat's behavior was evaluated eight times by means of open-field test and resistance-to-capture test. The specific parameters of animal activity were facial grooming, rearing, and locomotor activity, movement into the center of the open field, and response to capture. Results: Parameters related to stress and pain were higher in the group carrying active appliance, compared to the group with a passive appliance. Statistically significant differences in stress-related behavior between control and experimental groups were found 8 hours after placing the appliance and were most evident on the second day. Pain-related behavior was significantly greater in the experimental group than in the control group at 24 hours. Conclusions: The increase in emotional stress evoked by orthodontic tooth movement may precede the appearance of periodontal pain.

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The effect of alveolar decortication on orthodontically induced root resorption

The Angle Orthodontist ◽

10.2319/051819-344.1 ◽

2020 ◽

Vol 90 (4) ◽

pp. 524-531 ◽

Cited By ~ 1

Author(s):

Po-Jung Chen ◽

Joy H. Chang ◽

Eliane H. Dutra ◽

Ahmad Ahmida ◽

Ravindra Nanda ◽

...

Keyword(s):

Tooth Movement ◽

Root Resorption ◽

Orthodontic Tooth Movement ◽

Control Group ◽

Tartrate Resistant Acid Phosphatase ◽

Micro Computed Tomography ◽

Root Volume ◽

Male Wistar Rats ◽

Group 3 ◽

Group 2

ABSTRACT Objective To determine the effect of alveolar decortication on orthodontically induced root resorption. Materials and Methods A total of 24 male Wistar rats (14 week old) were used. The rats were randomly divided into one of the following three groups: group 1 (control group), orthodontic tooth movement (OTM) for 2 weeks; group 2, OTM for 2 weeks + two alveolar decortications (2AD); group 3, OTM for 2 weeks + four alveolar decortications (4AD). The first molar was moved mesially for 2 weeks. Micro computed tomography was used to analyze root volume. In addition, histological sections were stained with Tartrate Resistant Acid Phosphatase (TRAP) to quantify the osteoclast number. Results The buccal root volume in OTM + 4AD group was decreased by 8.92% and 6.11% when compared with the OTM-only group and OTM + 2AD group, respectively. Similarly, the other four root volumes in the OTM + 4AD group was decreased by 8.99% and 5.24% when compared with the OTM-only group and OTM + 2AD group, respectively. There was a decrease in buccal root density in the OTM + 4AD group by 4.66% and 3.56% when compared with the OTM-only group and the OTM + 2AD group, respectively. In addition, there was an increase in the number of osteoclasts by 195.73% and 98.74% in OTM + 4AD group in comparison with the OTM and OTM + 2AD group. Conclusions The amount of orthodontically induced root resorption was positively correlated with the extent of surgical injury used to accelerate orthodontic tooth movement.

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Comparison of the effects of micro-osteoperforation and corticision on the rate of orthodontic tooth movement in rats

The Angle Orthodontist ◽

10.2319/052015-343.1 ◽

2015 ◽

Vol 86 (4) ◽

pp. 558-564 ◽

Cited By ~ 32

Author(s):

Chi-Yang Tsai ◽

Teng-Kai Yang ◽

Hsueh-Yin Hsieh ◽

Liang-Yu Yang

Keyword(s):

Bone Density ◽

Alveolar Bone ◽

Tooth Movement ◽

Total Duration ◽

Orthodontic Tooth Movement ◽

Control Group ◽

Sprague Dawley ◽

Mineral Density ◽

Orthodontic Force ◽

Surgical Interventions

ABSTRACT Objective: To investigate the effects of flapless micro-osteoperforation and corticision on the rate of orthodontic tooth movement in rats. Materials and Methods: Forty-five 8-week-old male Sprague-Dawley rats were divided into the following groups: micro-osteoperforation and orthodontic force (MOP + F), corticision and orthodontic force (C + F), and orthodontic force only (F, control). The left maxillary first molars were pulled forward with a force of 50 g. Flapless surgical interventions were conducted in the MOP + F and C + F groups. The total duration of the experiment was 6 weeks. Alveolar bone density and the number of osteoclasts were evaluated using microcomputed tomography and histologic examination, respectively. Results: The tooth movement distance was significantly higher in both experimental groups than in the control group. Bone density and bone mineral density decreased in the MOP + F and C + F groups. The number of osteoclasts in the MOP + F and C + F groups was significantly higher than in the control group F. Conclusion: The two minimally invasive flapless surgical interventions increased bone remodeling and osteoclast activity and induced faster orthodontic tooth movement for at least 2 weeks in rats. No differences were observed between the outcome of flapless micro-osteoperforation and corticision in the rats.

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The Comparison of Ostecyte in the Pressure area and Tension area on Tooth Movement Because of Hyperbaric Oxygen Therapy

DENTA ◽

10.30649/denta.v12i1.162 ◽

2018 ◽

Vol 12 (1) ◽

pp. 34

Author(s):

Arya Barahmanta ◽

Muhammad Faizal Winaris ◽

Pambudi Raharjo

Keyword(s):

Hyperbaric Oxygen ◽

Oxygen Therapy ◽

Tooth Movement ◽

Bone Remodelling ◽

Orthodontic Tooth Movement ◽

Negative Control Group ◽

Positive Control ◽

Negative Control ◽

Control Group ◽

Pressure Area

Background: Orthodontic tooth movement is a interaction prosess 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). Purpose: 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. Materials and Methods: 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. Result: 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). Conclusion: 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.<pre> </pre>Keywords: Hyperbaric Oxygen, Tooth movement, Bone remodeling, Osteocyte Correspondence: Arya Brahmanta, Department of Orthodonty, Faculty of Dentistry, Hang Tuah University, Arif Rahman Hakim 150, Surabaya, Phone 031-5945864, Email: <a href="mailto:[email protected]">arya.brahmanta@hangtuah.ac.id</a>

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The role of inhibition of osteocyte apoptosis in mediating orthodontic tooth movement and periodontal remodeling: a pilot study

Progress in Orthodontics ◽

10.1186/s40510-021-00366-4 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Michele Kaplan ◽

Zana Kalajzic ◽

Thomas Choi ◽

Imad Maleeh ◽

Christopher L. Ricupero ◽

...

Keyword(s):

Bone Density ◽

Alveolar Bone ◽

Tooth Movement ◽

Orthodontic Tooth Movement ◽

Tartrate Resistant Acid Phosphatase ◽

Osteocyte Apoptosis ◽

Saline Administration ◽

Group 2 ◽

Group 1

Abstract Background Orthodontic tooth movement (OTM) has been shown to induce osteocyte apoptosis in alveolar bone shortly after force application. However, how osteocyte apoptosis affects orthodontic tooth movement is unknown. The goal of this study was to assess the effect of inhibition of osteocyte apoptosis on osteoclastogenesis, changes in the alveolar bone density, and the magnitude of OTM using a bisphosphonate analog (IG9402), a drug that affects osteocyte and osteoblast apoptosis but does not affect osteoclasts. Material and methods Two sets of experiments were performed. Experiment 1 was used to specifically evaluate the effect of IG9402 on osteocyte apoptosis in the alveolar bone during 24 h of OTM. For this experiment, twelve mice were divided into two groups: group 1, saline administration + OTM24-h (n=6), and group 2, IG9402 administration + OTM24-h (n=6). The contralateral unloaded sides served as the control. The goal of experiment 2 was to evaluate the role of osteocyte apoptosis on OTM magnitude and osteoclastogenesis 10 days after OTM. Twenty mice were divided into 4 groups: group 1, saline administration without OTM (n=5); group 2, IG9402 administration without OTM (n=5); group 3, saline + OTM10-day (n=6); and group 4, IG9402 + OTM10-day (n=4). For both experiments, tooth movement was achieved using Ultra Light (25g) Sentalloy Closed Coil Springs attached between the first maxillary molar and the central incisor. Linear measurements of tooth movement and alveolar bone density (BVF) were assessed by MicroCT analysis. Cell death (or apoptosis) was assessed by terminal dUTP nick-end labeling (TUNEL) assay, while osteoclast and macrophage formation were assessed by tartrate-resistant acid phosphatase (TRAP) staining and F4/80+ immunostaining. Results We found that IG9402 significantly blocked osteocyte apoptosis in alveolar bone (AB) at 24 h of OTM. At 10 days, IG9402 prevented OTM-induced loss of alveolar bone density and changed the morphology and quality of osteoclasts and macrophages, but did not significantly affect the amount of tooth movement. Conclusion Our study demonstrates that osteocyte apoptosis may play a significant role in osteoclast and macrophage formation during OTM, but does not seem to play a role in the magnitude of orthodontic tooth movement.

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The Effect of Apis mellifera Propolis on RUNX-2 and ALP during Remodeling of Orthodontic Tooth movement

Research Journal of Pharmacy and Technology ◽

10.52711/0974-360x.2021.00417 ◽

2021 ◽

pp. 2363-2366

Author(s):

Budi Handayani ◽

Mieke Sylvia Margaretha A R ◽

Rini Devijanti Ridwan ◽

Mohammed Aljunaid

Keyword(s):

Apis Mellifera ◽

Immunohistochemical Staining ◽

Tooth Movement ◽

Orthodontic Tooth Movement ◽

Laboratory Research ◽

Control Group ◽

Propolis Extract ◽

Treatment Groups ◽

Experimental Laboratory ◽

Group 2

Herbal medicine is interesting including treatments that use propolis. Propolis collected by Apis mellifera bees has a very useful composition whose active ingredients are flavonoids, CAPE and saponin. This research aims to analyze the effect of Apis mellifera propolis on RUNX-2 and ALP during the remodeling period caused by the orthodontic tooth movement in Cavia cobaya. It constitutes an experimental laboratory study and a random sampling method. The method used experimental laboratory research on 28 Cavia cobaya, which were divided into four groups consisting of two control groups and two treatment groups which have been given 3% and 5% propolis extract respectively. RUNX-2 and ALP expression were evaluated using immunohistochemical staining. Materials and Methods: Propolis is a resin substance produced by bees. Cavia cobaya with orthodontic tooth movement by separator rubber. The control group (Group 1) included clinically healthy Cavia cobaya (n=7), (Group 2) included Cavia cobaya with orthodontic tooth movement (n=7). A treatment group (Group P1) Cavia cobaya have been treated with orthodontic tooth movement and propolis 3%, (Group P2) Cavia cobaya have been treated with orthodontic tooth movement and propolis 5% and observed for 17 days. Samples of maxilla were taken from the subjects for analysis on day 17. RUNX-2 and ALP expression were evaluated using immunohistochemical staining. Results: showed that RUNX-2 and ALP expression were found to increase in the tension side. Conclusion: Propolis extract at 5% concentration had ability in bone remodeling by increasing RUNX-2 and ALP expression in the tension area during orthodontic tooth movement.

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The effect of autologous leukocyte platelet rich fibrin on the rate of orthodontic tooth movement: A prospective randomized clinical trial

European Journal of Dentistry ◽

10.4103/ejd.ejd_424_17 ◽

2018 ◽

Vol 12 (03) ◽

pp. 350-357 ◽

Cited By ~ 4

Author(s):

Azita Tehranchi ◽

Hossein Behnia ◽

Fereydoun Pourdanesh ◽

Parsa Behnia ◽

Nelson Pinto ◽

...

Keyword(s):

Clinical Trial ◽

Tooth Movement ◽

Random Effect ◽

Random Effect Model ◽

Orthodontic Tooth Movement ◽

Control Group ◽

Extraction Socket ◽

Effect Model ◽

Significant Difference ◽

And Control

ABSTRACT Objective: The aim of this study was to evaluate the effect of LPRF, placed in extraction sockets, on orthodontic tooth movement (OTM). Materials and Methods: Thirty extraction sockets from eight patients (five males, three females, with a mean age of 17.37 years; range 12–25 years) requiring extraction of first premolars based on their orthodontic treatment plan participated in this split-mouth clinical trial. In one randomly selected quadrant of each jaw, the extraction socket was preserved as the experimental group by immediate placement of LPRF in the extraction socket. The other quadrant served as the control group for secondary healing. Immediately, the teeth adjacent to the defects were pulled together by a NiTi closed-coil spring with constant force. A piece of 0.016 × 0.022-inch stainless steel wire was used as the main arch wire. The amount of OTM was measured on the study casts at eight time points with 2-week intervals for 3 months. Analysis of random effect model was performed for the purpose of comparison between the experimental and control groups. Results: According to the random effect model, a statistically significant difference was found between the experimental and control group in rate of OTM (P = 0.006). Conclusion: According to the results, application of LPRF, as an interdisciplinary approach combining orthodontics and surgery, may accelerate OTM, particularly in extraction cases.

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