Adult ; Humans ; Orthodontics, Corrective

ABSTRACT Anterior crossbites would normally require early intervention, especially when associated with mandibular displacements. The intervention would usually commence in children around the age of eight and nine, where treatment could be a challenge at this age. Therefore, a simple and quick treatment to this malocclusion would be desirable. This case series illustrates two cases of anterior crossbite with a functional shift that were successfully corrected using a simplified fixed technique, which involved a short-span nickel-titanium (Ni-Ti) aligning round archwire, composite resin and glass ionomer cement (GIC).
Malocclusion ; Orthodontics, Corrective--methods

Clinical crown lengthening procedure would be an effective method for overcoming adverse clinical condition such as short abutment length. There are three kinds of methods in clinical crown lengthening, those are, surgical crown lengthening, orthodontic extrusion and surgical extrusion. Clinicians have to try their best to choose a proper method among those for favorable results. This report aims to review the considerations in each method with various cases and to suggest a decision flow for appropriate selection.
Crown Lengthening* ; Crowns* ; Methods* ; Orthodontic Extrusion

Adult ; Humans ; Oral Surgical Procedures, Preprosthetic ; methods ; Orthodontics, Corrective ; Tooth Movement Techniques

OBJECTIVEObserve the clinical effect of removable lingual arch plus auxiliary spring for convenient dental (especially mandibular) arch expansion.

METHODSSeventeen patients with dental arch constriction complicated by mild dental crowding were enrolled in this study, including 9 requiring maxillary arch expansion and 8 necessitating mandibular expansion. The patients were divided to two groups at random for arch expansion with removable lingual arch plus auxiliary spring and with Quad-helix, respectively, and the effect of arch expansion was compared between the two groups.

RESULTSAfter 8 weeks of arch expansion, the average width of U4-U4 and U5-U5 in removable lingual arch group was enlarged by 2.2 mm and 3.0 mm, and that in Quad-helix group by 2.3 mm and 3.5 mm, respectively, showing no significant differences between the two groups (P>0.05). After 12 weeks of treatment, the average width of L4-L4 and L5-L5 in the former group was enlarged by 2.3 mm and 2.5 mm, respectively, significantly greater than that in the latter group (1.0 mm and 1.2 mm, P<0.05).

CONCLUSIONRemovable lingual arch plus auxiliary spring allows significant expansion of the middle segment of the dental arch (bicuspids), and can be more effective than Quad-helix for mandibular arch expansion.

Adolescent ; Child ; Dental Arch ; pathology ; Humans ; Malocclusion ; therapy ; Orthodontic Appliances, Removable ; Orthodontics, Corrective ; methods ; Palatal Expansion Technique ; instrumentation ; Young Adult

OBJECTIVEThe skeletal Class III malocclusion often occurs in ethnic Asia population, and it is difficult to obtain an ideal results if only treated with protraction headgear (PH). However, the combined rapid palatal expansion (RPE), Edgewise Technique and PH can reach it, so the authors investigated the methods and characteristics of combined RPE, Edgewise Technique and PH in the treatment of skeletal Class III malocclusion.

METHODSFifteen patients, aged 8.5-12 years, including six males and 9 females, with skeletal Class III malocclusion and maxillary retrusion were selected for this study. Radiographs of left hand and wrist showed that all patients were at the pre-pubertal stage. The duration of treatment was nine months on average.

RESULTSThe SNA and A-ptm increased with a mean of cephalometric analysis, which showed significant difference (P < 0.05).

CONCLUSIONObvious skeletal and profile changes can be achieved with combined RPE, Edgewise Technique and PH in the treatment of early skeletal Class III malocclusion.

Child ; Extraoral Traction Appliances ; Female ; Humans ; Male ; Malocclusion, Angle Class III ; therapy ; Orthodontics, Corrective ; instrumentation ; methods ; Palatal Expansion Technique

Humans ; Malocclusion ; therapy ; Molar, Third ; growth & development ; pathology ; Orthodontics, Corrective ; Tooth Eruption ; Tooth Loss ; pathology ; Tooth Movement Techniques

Humans ; Orthodontic Appliances ; Orthodontics, Corrective

Child ; Dental Restoration, Permanent ; Dentition, Permanent ; Humans ; Incisor ; diagnostic imaging ; injuries ; Male ; Orthodontic Appliances ; Orthodontic Extrusion ; Orthodontics, Corrective ; Radiography ; Tooth Avulsion ; classification ; diagnostic imaging ; therapy ; Tooth Eruption

Adult ; Humans ; Orthodontics, Corrective ; methods ; Periodontium