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At least 235 records · Page 13Linked to original sources
PubMedDate not supplied

Correction of anterior open bite in a case of achondroplasia.

Treatment planning for patients with skeletal deformities is often considered challenging. This article reports a female patient with achondroplasia who presented with severe maxillary retrognathism and vertical excess along with anterior open bite. The clinical and cephalometric findings of the patient are detailed here. The treatment plan consisted of modified anterior maxillary osteotomy for simultaneous vertical and sagittal augmentation along with orthodontic intervention. The course of surgical-orthodontic treatment and the results are presented. This treatment is to be followed by correction of vertical maxillary excess after completion of growth. This paper concludes that the dentoalveolar component of a skeletal deformity can be handled independent of the craniofacial management.

Achondroplasia↗
PubMed1976

Correction of anterior open bite deformity: a study of tongue function, speech changes, and stability.

Nine individuals with anterior open bite underwent tongue function and speech evaluation prior to treatment, postoperatively, and at three-month intervals for at least one year. Aberrant tongue function and speech improved in the absence of tongue or speech therapy during the postoperative period. Periodic clinical and cephalometric evaluation demonstrated generally good stability of treatment results for the period of study.

Adolescent↗
PubMed1999

Tongue muscle activity after orthodontic treatment of anterior open bite: a case report.

A case report of a Class I malocclusion with an anterior open bite and bimaxillary dental protrusion was presented. The patient had a tongue thrust swallow and slight lisping. After the treatment, significant adaptation in electromyographic pattern of genioglossus muscle activity during swallowing was determined. However, remarkable change in the electromyographic pattern of the genioglossus muscle did not occur during chewing.

Adult↗
PubMed1989

[The open bite--morphology and therapeutic consequences].

With cephalometric measurements we investigated the morphology of the malocclusion "Open bite" from adults. The main of abnormality is the divergence of the jaw bases and the compensatory growth of alveolar bone in vertical direction. Under consideration of the best time for beginning of the treatment we give advice for the etiologically orientated therapy.

Adult↗
PubMed1985

[Anterior open bite: the role of the infra-alveolae in its diagnosis and treatment].

Anterior open-bites may be skeletal, alveolar or mixed. The infra-alveolae is always due to a postural or functional muscular cause and the clinical examination plays an important part in the diagnosis. Delaire's cephalometric analysis can define the type of infra-alveolae. In view of their aetiology, the infra-alveolae require functional re-education, although glossectomy and multiple bands therapy may also be useful.

Alveolar Process↗
PubMed1990

Class I malocclusion with severe open bite skeletal pattern treatment.

A case report of a Class I malocclusion with a severe skeletal open bite, excessive overjet, a high mandibular plane angle, and a forward maxillary rotation is presented. Treatment has eliminated the causative factors (i.e., mouth breathing, enamel hypoplasia of the first molars, and abnormal tongue posture and function). A normal growth pattern has been restored, ensuring a good and stable orthodontic result.

Cephalometry↗
PubMed1995

Partial glossectomy for the treatment of anterior open bite. A case report.

A 24-year-old Afro-Caribbean with a pronounced anterior open bite and bimaxillary protrusion was successfully treated to a stable result with a partial glossectomy and fixed appliance therapy. Although transient sialorrhea and paraesthesia were experienced post-operatively, speech and function showed some improvement 2 years after treatment.

Adult↗
PubMed1991

[Long-term results of surgical-orthodontic treatment of open bite deformity by a Le-Fort-I osteotomy].

One year after the surgical correction of open bite deformity by a Le-Fort-I osteotomy, which in all cases was combined with presurgical orthodontic treatment, the stability was examined using clinical and computer assisted cephalometric methods. The results show that long term stability were obtained. The Le-Fort-I osteotomy, in combination with orthodontics, gives more stable and more predictable results when compared with results obtained after mandibular osteotomy.

Female↗
PubMed2002

An adult case of skeletal open bite with a severely narrowed maxillary dental arch.

Surgically assisted rapid maxillary expansion is proposed as an efficient approach for adult patients with transverse maxillary deficiency. This article reports the treatment of an 18-year, seven-month old male patient with an anterior open bite and a severely narrowed upper dental arch. A posterior crossbite was present on both sides. For the correction of the posterior crossbite, a lateral maxillary expansion of more than 8 mm was required. A surgically assisted rapid maxillary expansion with Le Fort I corticotomy and mandibular setback with a sagittal splitting ramus osteotomy were determined as the treatment plan. The total treatment time was 24 months including five months of post-surgical observation. After the treatment, an acceptable occlusion was achieved with a Class I molar relationship. The amount of actual maxillary expansion was 6.3 mm at the canines and 9.7 mm at the first molars. The relapse of the expansion was 0.9 mm and 0.1 mm at the corresponding regions two years after the surgically assisted maxillary expansion. It is emphasized that surgically assisted rapid maxillary expansion is a secure and efficient approach for achieving a desirable lateral maxillary expansion with stability in adult patients demonstrating transverse maxillary deficiency. Furthermore, it is suggested that longterm observation of the maxillary arch width after retention is of a great importance for the maintenance of the acceptable treatment outcome.

Adolescent↗
PubMed1998

Open bite deformity in amelogenesis imperfecta. Part 1: An analysis of contributory factors and implications for treatment.

Anterior open bite (AOB) is often seen in patients with amelogenesis imperfecta (AI). The skeletal and dental components were analysed in 15 patients with AI and AOB. Measurements on cephalometric radiographs and dental models were compared with those of 130 patients with AOB but without enamel anomalies. Skeletal components in the AI and non-AI group were comparable. The AI group showed omega-shaped dental arches and a reversed mandibular curve of Spee. Orthodontic treatment options are limited because of the conical form of the teeth, tight contacts in the posterior regions and the condition of enamel resulting in difficulties in bonding brackets. Fixation problems encountered during surgery are discussed. A multidisciplinary treatment is outlined consisting of a multi-segment Le Fort I osteotomy followed by prosthetic rehabilitation to stabilize occlusion for at least one year postoperatively.

Adolescent↗
PubMed2006

Anterior open bite treated with a palatal crib and high-pull chin cup therapy. A prospective randomized study.

The aim of this prospective randomized clinical study was to cephalometrically investigate the dentoalveolar and soft tissue changes produced by a removable appliance with a palatal crib associated with high-pull chin cup therapy in children with an Angle Class I anterior open bite (AOB) malocclusion. Thirty children (8 males and 22 females) with an initial mean age of 8.3 years and a mean AOB of 4.1 mm were treated with a removable appliance composed of a palatal crib associated with chin cup therapy for 12 months. A control group of 30 individuals (7 males and 23 females) closely matched for age, initial mean age 8.6 years, gender, and ethnicity with a mean AOB of 4.6 mm was followed without treatment. The measurements (means and standard deviations) were statistically analysed using a paired t-test. The results showed no significant differences in the level of molar eruption or in lower anterior face height, suggesting that the vertical control expected from the chin cup therapy did not occur. Dentoalveolar changes at the anterior region were evident, with statistically significant extrusion, retrusion, and lingual tipping of the maxillary and mandibular incisors (P < or = 0.05). However, these hard tissue changes did not imply soft tissue changes and the variables related to the soft profile were not statistically significantly different between the groups. The dentoalveolar changes at the anterior region of the dental arches were mainly responsible for closure of the AOB in patients treated in the mixed dentition.

Cephalometry↗
PubMed1996

Treatment mechanics in Class III open bite malocclusion with Tip Edge technique.

Nonextraction treatment with nonorthognathic intervention for treatment of a skeletal Class III open bite malocclusion was performed. Light traction with effective uprighting of the lower dentition with Tip Edge brackets (TP Orthodontics, La Porte, Ind.) and anteriorly placed Class III elastics was the modus operandi. Class III elastics can prevent elongation of the upper molars and yet can cause the upper dentition to move forward. Ni-Ti wire with a reverse curve of Spee helped both the uprighting and depression of the mandibular molars. The present case was treated with the Kim philosophy but employing Tip Edge brackets. This combination was found to be very easy to manipulate and achieved good results in a very short period of time.

Adolescent↗
PubMed1994

A combined orthodontic and orthognathic surgery approach to the treatment of extreme anterior open bite in an adult.

This report describes a combined orthodontic and orthognathic surgery approach to the treatment of open bite in an adult female. An aesthetically pleasing and stable result was achieved in which the Intercuspal and Retruded Contact Positions were coincident. The functioning occlusion exhibited bilateral canine rise and an absence of non-working-side interferences on lateral excursion. Incisal guidance with disclusion of the posterior occlusal surfaces occurred on protrusive function. There were no signs or symptoms of temporomandibular joint dysfunction before or after treatment.

Adult↗
PubMed2004

Initial intrusion of the molars in the treatment of anterior open bite malocclusions in growing patients.

The treatment of the hyperdivergent phenotype and/or anterior openbite is one of the common problems facing orthodontists. The purpose of this study is to present a new appliance (Molar Intruder) for molar intrusion and to determine its effects in the treatment of anterior openbite. The study group comprised 14 patients (eight girls and six boys), with a mean age of 10 years and 7 months. All presented anterior open bite malocclusions between the second premolars. The study was carried out on lateral head films taken before (T1) and after (T2) molar intrusion. Periapical radiographs, study models, and standard photographs of all the patients were also obtained before and after molar intrusion. The paired sample t-test was used to determine the differences between the parameters. The average treatment time with the Molar Intruder was five months. The mean intrusion of maxillary and mandibular molars was 1.86 mm and 1.04 mm, respectively. Maxillary incisors extruded 0.54 mm with a labial tipping of 1.46 degrees and overbite increased by 4.00 mm. The mandibular plane angle was decreased by 1.57 degrees, and the anterior face height was decreased by 1.86 mm on average. The mandible showed a counterclockwise rotation, the chin moved forward, and the posterior facial height/anterior facial height ratio was increased. Anterior openbites of the patients were significantly rehabilitated at the end of the intrusion period, simplifying further orthodontic treatment.

Cephalometry↗
PubMed1990

The surgical treatment of skeletal anterior open-bite deformities with rigid internal fixation in the mandible.

The rationale for the surgical correction of skeletal anterior open-bite deformities by bilateral mandibular rotation osteotomy is presented. Results of this procedure in which rigid internal fixation is used are reported and show a very high degree of long-term stability. The procedure offers a useful alternative to the more common approach of posterior maxillary intrusion, which does not always address the cosmetic defect.

Bone Plates↗