Offers the very latest on the theory and practice of integrating mini-implant techniques into clinical practice This all-new second edition of The Orthodontic Mini-implant Clinical Handbook provides ...a thoroughly revised and expanded update to the theoretical and practical aspects of using mini-implants in orthodontic practice. Taking a practical step-by-step approach with hundreds of clinical images, it presents updated clinical techniques and new clinical cases, covering all topics of importance for utilising mini-implants. It also includes a new chapter on mini-implant anchored maxillary expansion appliances. It begins with a chapter that looks at mini-implant principles and potential complications, before moving onto clinical and design factors for maximising mini-implant success. Other chapters cover incisor retraction; molar distalisation and protraction; intrusion and anterior openbite treatments; bone anchored rapid maxillary expansion; orthognathic surgical uses; and ectopic teeth. * Provides a comprehensive guide to both theoretical and practical advice for the use of mini-implants in orthodontic practice * Covers updated clinical techniques and new clinical cases * Presents a new chapter on mini-implant anchored maxillary expansion appliances * Takes a highly illustrated step-by-step approach ideal for clinical practice The Orthodontic Mini-Implant Clinical Handbook is an essential resource to orthodontists, maxillofacial surgeons, practicing dentists, and anyone with an interest in mini-implant skeletal anchorage.
The Twin Block appliance (TBA) has evolved over the decades to remain a very effective treatment for growing Class II patients. This article introduces how two new versions of the TBA may be produced ...through an entirely digital workflow, from intra-oral scanning to thermoplastic appliance fabrication, using a novel computer-aided design process.
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Many orthodontists are aware of the potential applications of three-dimensional (3D) printing in orthodontics but are hesitant in introducing this technology into their clinical practice and ...workflow. Therefore, this article explains the hardware and software requirements, plus the workflow.
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Intraoral scanning techniques, and the associated software, have revolutionized model acquisition, analysis, and virtual planning in orthodontics. Three-dimensional printing is the final aspect of ...this digital workflow, converting these virtual models and simulations of the tooth and occlusal movements into physical reality. This article provides an insight into how in-house three-dimensional printing is now a feasible and transformative reality for many orthodontic settings and how this empowers orthodontists to optimize their patient care.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
To evaluate skeletal and dental changes after intrusion of the maxillary molars in subjects with anterior open bite.
This retrospective cephalometric study evaluated skeletal and dental changes ...resulting from the use of maxillary orthodontic mini-implants in 31 consecutively treated patients. Radiographs were taken at the start and end of maxillary molar intrusion to evaluate the associated changes. Statistical analysis was performed using a one-sample t-test.
The mean treatment observation time was 1.31 years (SD = 2.03). The maxillary first molars (P = 0.0026) and second molars (P = 0.039) were intruded. However, the mandibular first molars (P = 0.0004) and second molars (P = 0.003) erupted in adolescent patients. Both the maxillary and mandibular first molars inclined distally (P = 0.025 and P = 0.044, respectively). The mandibular plane angle decreased (P = 0.036), lower facial height decreased (P = 0.002), and the occlusal plane angle increased (P = 0.009). The overbite increased (P < .0001). The ANB angle decreased (P < .0001). Mandibular dental and skeletal changes were more apparent in adolescents, while adults tended toward maxillary changes.
Vertical traction from orthodontic mini-implants reduces the maxillary posterior dentoalveolar height, thereby assisting orthodontic closure of anterior open bite. However, simultaneous eruption or extrusion of the mandibular molars should be controlled. Adolescent patients tend to demonstrate more favorable effects of mandibular autorotation than do adults.
Surgical trauma and prolonged extra-alveolar exposure of the donor tooth's root sheath are both complicating factors during tooth autotransplantation surgery. This case report describes a 12-year-old ...female patient who underwent surgical transplantation of a maxillary second premolar to a central incisor site. A three-dimensional printed analogue of the donor tooth was fabricated from a cone beam (CBCT) scan of the tooth in order to minimise the extra-oral (exposure) time and frequency of trial insertions of the donor tooth into the recipient socket. The laboratory and clinical aspects of this novel technique are described.
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Objective: Orthognathic wafers may be made using digital model movements and CAD-CAM technology. This paper analysed the accuracy of maxillary movements using this new process.
Design: Retrospective ...study of pre and post-operative cephalograms.
Participants: Thirty consecutive orthognathic patients undergoing bimaxillary osteotomies in a UK hospital.
Methods: Jaw movements were planned using cephalometric and Orthoanalyzer™ software. The resultant intermediate and final wafer occlusal relationships were used for wafer fabrication by 3D printing of the inter-occlusal space. Pre- and post-operative lateral cephalograms were compared in terms of maxillary antero-posterior and vertical movements. Statistical analyses including the paired t-test, two-sample t-test and Fisher's exact test.
Results: Wide individual variation was observed between the planned and actual movements. Thirteen cases (43%) had a 2 mm discrepancy in at least one variable. Statistically significant differences between the planned and actual maxillary vertical movements were observed for the molar (U6y: p < 0.0001) and anterior maxillary (Ay: p < 0.01) differences. Analysis of a subgroup with primarily impaction movements demonstrated a statistically significant bias towards excessive maxillary advancement (U1x: p < 0.01) and incisor impaction (U1y: p < 0.01) in this group.
Conclusions: This new digital surgical wafer technique achieves a similar level of accuracy to the conventional facebow and model surgery process.
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The Orthodontic Mini-Implant Clinical Handbookis the must-have book for trainee and practicing orthodontists. It provides the essential theoretical and clinical mini-implant information to enable the ...clinician to easily introduce skeletal anchorage into their practice across a wide variety of common clinical scenarios.The initial chapters cover general principles with subsequent chapters employing a step-by-step approach to guide the novice through the most common clinical uses for orthodontic mini-implants including: incisor retraction, molar distalisation, transverse and asymmetry corrections, and orthognathic surgery uses.
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