Dental Extrusion with Orthodontic Miniscrew Anchorage: A Case Report Describing a Modified Method

Abstract

In recent years, the skeletal anchorage through miniscrews has expanded the treatment options in orthodontics (Yamaguchi et al., 2012). We hereby present a modified method for tooth extrusion for cases where crown-lengthening surgery is contraindicated for aesthetic reasons. This modified method uses three orthodontic appliances: a mini-implant, an orthodontic wire, and a bracket. The aim of this case report was to increase the length of the clinical crown of a fractured tooth (tooth 23) by means of an orthodontic extrusion with the modified method of Roth and Diedrich.

Management and Follow-Up of Complicated Crown Fractures with Intrusive Luxation of Maxillary Incisors in an 8-Year-Old Boy

“…Current dental literature suggests different treatment approaches for the management of intrusive luxation injuries including passive repositioning, allowing the tooth to reerupt, and active repositioning, either surgically or by use of orthodontic appliances [2]. Miniscrews are effective orthodontic devices for various orthodontic movements of the intruded teeth; it is recommended for dental extrusion without involving other teeth, implant side effects, or gingival margin cosmetic disability [11]. In case of intrusive luxation, the miniscrewassisted orthodontic repositioning has been proposed [11].…”

“…Miniscrews are effective orthodontic devices for various orthodontic movements of the intruded teeth; it is recommended for dental extrusion without involving other teeth, implant side effects, or gingival margin cosmetic disability [11]. In case of intrusive luxation, the miniscrewassisted orthodontic repositioning has been proposed [11]. In fact, orthodontic miniscrews demonstrated excellent mechanical properties and also with small diameters so they can be used also in hard to reach areas [12].…”

“…Root resorption after an intrusion is a commonly occurring scar complication. Inflammatory root resorption and replacement root resorption are classified as invasive or progressive root resorption [11,12]. External root resorption has been reported and cited to be between 28% and 66% [1,13,14].…”

“…It demands high cooperation and motivation from the patient. In addition, the long-term presence of calcium hydroxide in root canal space can increase the brittleness of the root dentin and the risk of future cervical root fractures especially in open apex teeth [11]. In spite of these disadvantages, it is still the preferred treatment protocol due to its high success rate [1,11].…”

Antibacterial photodynamic therapy: overview of a promising approach to fight antibiotic-resistant bacterial infections

“…For example, penicillin binds to the penicillin binding proteins and inhibits the crosslinking of the peptidoglycan multi-layer [97]. Vancomycin binds to the D-Ala-D-Ala residues of the peptide side chain of the peptidoglycan precursor lipid II and deters downstream peptidoglycan synthesis steps [98]. Daptomycin is believed to insert into the membrane of Gram-positive bacteria, where it forms aggregates that modify the curvature of the membrane and cause cavitation, ion leakage, and ultimately cell death [99].…”