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This article presents a case of a Class II division 2 patient, with a short face and increased overbite, treated with second upper premolars extractions. For this treatment, multibracket fixed appliance with MBT .022 prescription was used. To control the anchorage during retraction, interradicular micro-screws were placed vestibular over first molars in first and second quadrant. Final results were satisfactory, achieving a bilateral molar class II and canine class I occlusion, correcting the overbite and overjet as well as obtaining a correct torque of the upper incisors. We also improve the facial aesthetics of the patient with a harmonized profile with the retrusion of the upper lip. Restoration of the anatomy of the upper lateral incisors was achieved with aesthetic composite restorations. [ABSTRACT FROM AUTHOR]

Since bracketing cemented directly into the enamel was introduced into orthodontic practice, the problem has always existed to determine and achieve the exact and precise place to determine the position of the bracket. It has been recognized for many years that the exact positioning of the bracket is of utmost importance in the efficient application of biomechanical force1. A new bracket positioning guide has been developed with the Nemotec NemoCast Software. Some problems are always present when cementing brackets directly analogously and traditionally. In this article, the development and use of this bracket positioning guide for direct bonding and its advantages over the convensional technique will be presented and explained. (Rev Esp Ortod. 2019;49:xx-xx). [ABSTRACT FROM AUTHOR]

The case of a 43-year-old adult patient with a severe skeletal class III malocclusion (Wits -9.1mm), anterior crossbite and skeletal compression of the maxilla of 6mm by WALA is presented. The performed treatment in this patient consists of a skeletal maxilla disjunction without SARPE with the aid of a pure bone-borne supported expander (MICRO4-expander™) following a specific and personalized very slow disjunction protocol for adult patients. We call this the activation protocol with polycyclic force control (CFPC protocol, explained in a 2 PART). Once the disjunction of the maxilla has been completed and its desired width is achieved, the case is finalized with an orthognathic surgery that consists of an advancement of the maxilla followed by a reduction mentoplasty. In the edentulous areas, conventional dental implants were placed that served as anchors to solve the lower dental crowding with a discrete distalization of the lower premolars. [ABSTRACT FROM AUTHOR]

Dental problems and malocclusions in children should be diagnosed with multidisciplinary approach which should include appropriate prevention, diagnosis and eruption controls. A case of a 13-year-old female with anterior and left posterior crossbite, 1.5 and 2.5 included and 3.7 and 4.7 impacted is shown. In order to achieve good function, aesthetics and stability, a maxillary rapid expansion, extractions and finally restorations on the anterior front were proposed. The treatment was completed in 35 months, obtaining a molar and canine class I with a correct overjet and overbite. [ABSTRACT FROM AUTHOR]

A 12-year-old skeletal class III patient with open bite and compression is presented. To obtain a good occlusal and facial result, it was proposed to treat the case by means of maxillary protraction with a facial mask anchored on micro-screws and the Alt-RAMEC protocol. [ABSTRACT FROM AUTHOR]

The case of a skeletal class III adult patient due to maxillary deficiency is presented. He was a long-face who also had a severe maxillary compression. A concave profile with a lack of malar support was also observed. We proposed a combined treatment between orthodontic and orthognathic surgery in order to obtain an optimal occlusal and facial result. The treatment started with a SARPE (Surgically Assisted Rapid Palatal Expansion) procedure to correct the transversal problem. Afterwards, extractions of upper second bicuspids were done to prepare the case for the second surgery. When the pre-surgical orthodontic treatment was finished, a bimaxillary surgery with anticlockwise rotation of occlusal plane was performed. [ABSTRACT FROM AUTHOR]

Currently, orthodontic treatment in adults is becoming very frequent. The treatment plan approach always has an interdisciplinary consideration. Achieving excellent coordination between dental specialties will be a key factor for success and guarantee periodontal and temporomandibular joint health, improve aesthetics, stability and function. A case of a 39-year-old woman with dental class II malocclusion, anterior open bite, compression and temporomandibular dysfunction is presented. Her chief complaint was lack of aesthetics in her smile and pain in the area of the masticatory musculature. After six months with a superior occlusal splint, condylar stabilization was achieved, making muscle pain disappear and discovering a different occlusal scheme from the usual occlusion. Under these circumstances an orthodontic treatment plan was designed in both arches to correct the malocclusion. This included the extraction of the upper and lower premolars and the vertical control of the posterior sectors by temporary skeletal anchorage device. The treatment was completed in 32 months with fixed appliances (MBT slot 0.22 technique), achieving a class I sagittal relationship with correct overjet and overbite. The final upper incisor exposure was correct, closing the anterior open bite and aesthetically improving the smile. [ABSTRACT FROM AUTHOR]

Objectives: To asses whether dental eruption order can play a role in the early diagnosis of crossed laterality., Study Design: Dental eruption pattern along with eye, ear, hand and foot lateralism were examined on 131 children between 6 to 8 years old from public schools from a multietnic population area of Barcelona city. Statistic methods (Statgraphics Plus 5.1 program) were used to evaluate data recollected., Results: Only foot and dentition lateralities behave as independent variables regarding hand laterality. So dental eruption laterality (along with the foot one) would be one of the parameters more related to hand laterality given that dentition variable relationship is greater that the foot one. This suggests that tooth eruption could be more clinically relevant. Crossed laterality hand-foot is significantly more predominant in men (13%) than in women (1,6%). Meanwhile, the relationship between hand and dentition didn't show any influence of sex., Conclusions: Dental eruption order, can be used as a good parameter in the determination of the patient's laterality.

Objective: Orthodontic mini-implants (OMIs) are increasingly used in orthodontics but can fail for various reasons. This study investigates the effects of OMI design characteristics on the mechanical properties in artificial bone., Material and Methods: Twelve self-drilling OMIs (2 small, 6 medium, 4 large) from 8 manufacturers were tested for their primary stability in simulated medium-high cancellous bone and the risk to fracture in high-density methacrylate blocks. For the assessments of the maximum insertion torque (IT) and torsional fracture (TF) 5 of each OMI were used and for the pull-out strength (POS) 10. The OMIs were inserted with a torque screwdriver (12 sec/360°) until the bottom at 8 mm depth was reached. OMI designs were analyzed with a scan electron microscope (SEM)., Results: SEM images revealed a great variation in product refinement. In the whole sample, a cylindrical OMI shape was associated with higher POS (p<0.001) but lower IT (p=0.002) values. The outer and inner OMI diameters were design characteristics well correlated with POS, IT and TF values (ranging from 0.601 to 0.961). Greater thread depth was related to greater POS values (r= 0.628), although OMIs with similar POS values may have different IT values. Thread depth and pitch had some impact on POS. TF depended mainly on the OMI inner (r= 0.961) and outer diameters (r=0.892). A thread depth to outer diameter ratio close to 40% increased TF risk., Conclusion: Although at the same insertion depth the OMI outer and inner diameters are the most important factors for primary stability, other OMI design characteristics (cylindrical vs. conical, thread design) may significantly affect primary stability and torsional fracture. This needs to be considered when selecting the appropriate OMI for the desired orthodontic procedures.

There are different ways of closing extraction spaces with lingual orthodontics. One is to use loop mechanics and the other is to use sliding mechanics. This case report describes the treatment of closing spaces using sliding mechanics with and without the use of microscrews. Understanding and applying basic biomechanical principles is necessary for lingual orthodontics and the use of miniscrews. The purpose of this article is to demonstrate the effect of orthodontic miniscrews in controlling anchorage and the basic biomechanical considerations in understanding the influence of the anterior teeth.