The effect of corticision on root resorption with heavy and light forces

Murphy, Christopher; Kalajzić, Žana; Chandhoke, Taranpreet; Utreja, Achint; Nanda, Ravindra; Uribe, Flávio

doi:10.2319/112514-843.1

Cited by 18 publications

(16 citation statements)

References 25 publications

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“…This finding was in contrast to previous studies. Murphy et al 11 did not find a significant difference in resorption between corticision-assisted tooth movement with forces of 10 g (light force) and 100 g (heavy force) at 14 days. This contradictory result possibly came from the different experimental period.…”

Section: Discussionmentioning

confidence: 90%

Tissue response resulting from different force magnitudes combined with corticotomy in rats

Kraiwattanapong

Samruajbenjakun

2019

The Angle Orthodontist

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Objectives: To evaluate the amount of hyalinization and root resorption after application of light and heavy forces during corticotomy-assisted tooth movement. Materials and Methods: Forty-eight male Wistar rats were used. Eight animals were the control group (day 0). The other 40 animals were randomly divided into two groups using the split-mouth technique: (1) corticotomy combined light force (CLF) and (2) corticotomy combined heavy force (CHF). Nickel-titanium closed coil springs that generated 10 g (light force) and 50 g (heavy force) were used for maxillary first molar movement. three-dimensional root volume was evaluated at 0, 14, and 28 days. Percent hyalinization was analyzed at 0, 3, 7, 14, 21, and 28 days by histomorphometric analysis. Results: The CHF group showed significantly lower cervical root volume than the CLF group at 28 days. Compared with day 0, the CHF group showed significantly less root volume in both distobuccal and distopalatal roots at 28 days. The hyalinization percentages in the CHF group were significantly higher than the CLF group at days 3 and 21. Conclusions: Heavy force combined with corticotomy produced more periodontal ligament hyalinization and root resorption than the light force combined with corticotomy.

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Section: Discussionmentioning

confidence: 90%

Tissue response resulting from different force magnitudes combined with corticotomy in rats

Kraiwattanapong

Samruajbenjakun

2019

The Angle Orthodontist

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“…Previous studies have mostly investigated root resorption as a result of surgical insult, but no studies have reported the correlation between the increase of surgical insult and orthodontically induced root resorption. [13][14][15] The results suggested the amount of orthodontically induced root resorption was directly associated with the extent of injury.…”

Section: Discussionmentioning

confidence: 96%

The effect of alveolar decortication on orthodontically induced root resorption

Chen¹,

Chang²,

Dutra³

et al. 2020

The Angle Orthodontist

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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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“…The blade should be pulled out by a swing motion. Clinical studies were conducted on humans [32] and animals [31,33] and concluded corticision effectively fastens tooth movement similar to corticotomy and is advantageous because of its less invasiveness. Among the published studies on cortision two were case control studies [31,33] and other was case series [31,32].…”

Section: Surgical Methodsmentioning

confidence: 99%

“…Clinical studies were conducted on humans [32] and animals [31,33] and concluded corticision effectively fastens tooth movement similar to corticotomy and is advantageous because of its less invasiveness. Among the published studies on cortision two were case control studies [31,33] and other was case series [31,32].Piezocision: This is a minimally invasive procedure involves flapless in combining piezosurgical cortical micro-incisions with selective tunneling that allows for soft-tissue or bone grafting.[34] Vercelotti and Podesta [35] established the use of piezosurgery instead of burs, in conjunction with the conventional flap elevations to create an environment conducive for the rapid tooth movement. This technique is quite invasive as it requires extensive flap elevation and osseous surgeries, with post-surgical discomfort.…”

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confidence: 99%

Accelerated Orthodontics–An overview

Unnam¹,

Gs²,

P³

et al. 2018

J Dent Craniofac Res

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Orthodontic treatment is the reorganization of skeletal and/or dental tissues. Prolonged treatment duration is one of the main concerns of patients undergoing with fixed orthodontics. This extended orthodontic treatment in such particular cases has several drawbacks to the patients such as increased predisposition to root resorption, dental caries and gingival recession, etc. Consequently, researchers introduced few methods to accelerate the velocity of the tooth movement without any drawbacks. These kind of methods used in orthodontics were popular as accelerated orthodontics. Accelerated orthodontics could be possible by mechanical stimulation or device assisted therapy, surgical therapy and by the use of pharmacological agents. The purpose of the present manuscript was to describe and evaluate the methods used in accelerated orthodontics.Keywords: Accelerated orthodontics; Conventional orthodontic treatment; Corticotomy; Tooth movement IntroductionThe movement of tooth orthodontically happens under mechanical forces depends upon the alteration of the tissues surrounding its radicular part. These mechanical force creates a response in cellular component of surrounding periodontal ligament (PDL), that creates resorption in bone on pressure side and deposition of bone on the either side (tension side) [1]. This is an inflammatory process and the rate limiting factor for tooth movement is bone resorption at the bone and periodontal ligament interface [2]. Orthodontic movement can be controlled by the size of the applied force and the biological responses from the periodontal ligament [3]. This orthodontic force would cause inflammation around the periodontal ligament due to changes in blood flow, leading to the secretion of different inflammatory mediators like colony-stimulating factors, cytokines, growth factor, arachidonic acid metabolites and neurotransmitters. As a result of these secretions, remodelling of the bone occurs [4,5].Macrophage colony stimulating factor (M-CSF), Receptor activator of nuclear factor kappa B ligand (RANKL), and osteoprotegerin (OPG) by osteoblasts play key roles in tooth movement has been showed in Figure 1. RANKL binds to its receptor, RANK (Receptor activator of nuclear factor kappa B), on the surface of osteoclastic cells at developmental stage. The RANKL/RANK binding is very critical for the function, differentiation, and survival of osteoclasts. Fixed orthodontics could last for 24 to 36 months which further poses the risk of complications associated with the treatment such as external root resorption, periodontal problems and patient compliance. Orthodontists are persistently motivated towards developing potential strategies to enhance the rate of orthodontic tooth movement [6][7][8] AOTM has been preferred for its numerous prospective benefits like shorter treatment duration, differential tooth movement, enhanced envelope of tooth movement, improved post treatment stability and reduced side effects [9]. Attempts to AOTM can be dated back to the 1890s, where Cunningh...

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The effect of corticision on root resorption with heavy and light forces

Abstract: At day 14, neither the amount of force nor the cortical incision caused significant effect on root resorption that was registered by histomorphometric or microCT analysis.

Cited by 18 publications

References 25 publications

Tissue response resulting from different force magnitudes combined with corticotomy in rats

Tissue response resulting from different force magnitudes combined with corticotomy in rats

The effect of alveolar decortication on orthodontically induced root resorption

Accelerated Orthodontics–An overview

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