Effects of intentional damage of the roots and surrounding structures with miniscrew implants

Hembree, Megan; Bushang, Peter H.; Carrillo, Roberto; Spears, Robert; Rossouw, P. Emile

doi:10.1016/j.ajodo.2008.11.017

Cited by 31 publications

(16 citation statements)

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“…Regenerated cementum, periodontal ligaments and alveolar bone were observed. Only pulpal invasion or the presence of inflammatory infiltrate caused wound healing problems (Asscherickx et al, 2005;Chen et al, 2008;Hembree et al, 2009;Brisceno et al, 2009). Thus dental-root hits of Groups I and II (no pulpal involvement) do not produce problems.…”

Section: Discussionmentioning

confidence: 92%

“…Tooth ankylosis was observed with dental-root fragmentation (Dao et al, 2009). Hembree et al (2009) reported regeneration of the periodontal ligament. Kang et al (2009) found osteoid and/or cementoid tissue with normal periodontal ligament in moderately injured teeth and concluded that minimal damage of a root does not adversely affect the healing process.…”

Section: Introductionmentioning

confidence: 98%

“…Several animal studies evaluated the consequences of root damage in dogs. Screws were placed either unintentionally (Asscherickx et al, 2008;Renjen et al, 2009) or intentionally into the dental roots (Chen et al, 2008;Brisceno et al, 2009;Dao et al, 2009;Hembree et al, 2009;Kang et al, 2009). The screws were left in situ for 3e24 weeks.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Root trauma and tooth loss through the application of pre-drilled transgingival fixation screws

Schulte-Geers¹,

Kater²,

Seeberger³

2012

Journal of Cranio-Maxillofacial Surgery

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Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Root trauma and tooth loss through the application of pre-drilled transgingival fixation screws

Schulte-Geers¹,

Kater²,

Seeberger³

2012

Journal of Cranio-Maxillofacial Surgery

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“…12,17,18 In order to visualize the dynamics of tissue-screw interactions during OTM, we had to determine whether physical contact had taken place between the root and screw during OTM in this experiment. Because of the shallow tongue base and flat palatal plane of dogs, it is not possible to obtain good periapicals to discern the proximity of the screw and root during experiments, in contrast to such studies in humans.…”

Section: Discussionmentioning

confidence: 99%

Damage to the root after tooth movement towards a temporary anchorage device: An animal pilot study

Huang

Lai

Chang

et al. 2012

Journal of Dental Sciences

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Background/purpose: Obvious craters are consistently found on roots when the teeth move against the screws of a temporary anchorage device (TAD) in human studies. In order to understand the dynamics of tissue reactions with this contact during orthodontic tooth movement (OTM), an animal experiment was performed. Methods: Two mongrel dogs were used. In the first animal, the teeth were moved towards the screws for 12 weeks, and a 6-week healing period was used. In the second animal, loading was continued for 18 weeks without a healing period. Results: Screws in contact with a root during OTM remained stable. Damage to the roots was indeed present as shallow dents, although this amount of damage was relatively small compared to the width of the root. A few inflammatory cells were detected in the periodontal structures. Once the force of the load was removed, there was little evidence of ongoing resorption. Conclusions: A root moving towards a screw during OTM leads to crater-like damage. When time was allowed for healing, a trace of labeled cementum was found to have repaired the root surface, although a large portion of the concavity was filled in with alveolar bone, and the periodontal ligament space remained constant. A root moving against a screw produced excessive tipping. To avoid deviation from the predicted biomechanics and damage to the root, extra caution should be used to ensure the best benefits for patients when TADs are used interdentally for distalization of the dentition during orthodontic treatment.

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“…However, the newest MSIs are self-drilling (and self-tapping). Consequently, the clinician now has to be very cautious, as the sharp tip can fracture with tooth contact, and it could penetrate the tooth (like a pilot drill) with possible severe deleterious effects, which can lead to pulpal destruction (Brisceno et al, 2009;Hembree et al, 2009). The translational effect of this information has led to an evolution of the insertion technique.…”

Section: Osseointegration Versus Bone-to-implant Contact (Bic)mentioning

confidence: 98%

Translational mini-screw implant research

Rossouw

2014

Journal of Orthodontics

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It is important to thoroughly test new materials as well as techniques when these innovations are to be utilized in the human clinical situation. Translational research fills this important niche. The purpose of translational research is to establish the continuity of evidence from the laboratory to the clinic and in so-doing, provide evidence that the material is functioning appropriately and that the process in the human will be successful. This concept applies to the mini-screw implant; which, has been very successfully introduced into the orthodontic armamentarium over the last decade for application as a temporary anchorage device. The examples of translational research that will be illustrated in this paper have paved the way to ensure that clinicians have evidence to confidently utilize mini-screw implants in orthodontic practice. Needless to say, more studies are needed to ensure a safe, effective and efficient manner to practice orthodontics.

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Effects of intentional damage of the roots and surrounding structures with miniscrew implants

Cited by 31 publications

References 0 publications

Root trauma and tooth loss through the application of pre-drilled transgingival fixation screws

Root trauma and tooth loss through the application of pre-drilled transgingival fixation screws

Damage to the root after tooth movement towards a temporary anchorage device: An animal pilot study

Translational mini-screw implant research

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