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2.
Eur J Dent ; 14(1): 100-106, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32168537

RESUMEN

OBJECTIVES: The purpose of this study was to determine the differences in three-dimensional (3D) facial features in a population from Zimbabwe and the United States. In addition, this study seeks to establish an average facial template of each population allowing clinicians to treat patients according to their cultural esthetic perceptions. MATERIALS AND METHODS: Three hundred one subjects from Zimbabwe and the United States were carefully selected and recruited for the study. Each subject presented with a normal facial profile, no asymmetries, and normal body mass index. The 3D images were captured using the 3dMD cameras. All images were further separated into male and female groups of the respective populations and imported to a dedicated software for analysis. STATISTICAL ANALYSIS: The 3D facial images were constructed using Rapidform 6 software to recreate a composite facial average for each group representing a male and female average 3D face of Zimbabwean (Zim) and United States origin. RESULTS: The linear measurements showed that the maximum average distance between the Zim-M and Zim-F was 1.24 mm and the minimum distance between the African American (AA)-M and AA-F was 0.24 mm. This was the absolute distance. When the signed linear measurements were taken into consideration, the maximum average distance between Zim-F and AA-M was 1.22 mm and the least average distance between the Zim-M and AA-M was 0.22 mm. The absolute color histograms showed greatest similarity between the Zim-M and AA-M at 58% and the Zim-F had a 25 and 27% similarity with the AA-F and Zim-M, respectively. CONCLUSION: The Zim-F showed the most variable features with a broader face, prominent forehead, and retruded alar base compared with their male counterparts and the Zim-M showed a wider prominent malar/zygomatic region, and prominent lateral supraorbital regions. There was a high similarity of 58% between the Zim-M and the AA-M, with the Zim-M showing a more protrusive superciliary arches, and a lateral zygomatic region tapering to the root of the nose.

3.
J Orthod ; 47(2): 140-148, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32114874

RESUMEN

OBJECTIVE: It has been reported that temporomandibular joint (TMJ) function after orthognathic surgery differs from normal patients. Dysfunction of the joints occurs often even in the general public, with an incidence in the range of 20%-25%. Population-based studies among adults report that approximately 10%-15% have symptoms of pain and 5% of them had a perceived need for treatment. To date, no studies have reported on the evaluation of TMJ function after orthognathic surgery through the use of four-dimensional jaw tracking. DESIGN AND SETTING: This study evaluated TMJ function using such a device and information from a TMJ questionnaire. Sixteen orthognathic surgery patients and 17 controls were included in this study. Four-dimensional jaw tracking information was obtained using the SiCAT JMT device. Clinical signs and jaw function were evaluated. RESULTS: Within the limitations of the study, the following results were seen using the SICAT JMT+ jaw tracking device: (1) no significant differences were found in any of the millimetric measurements between the surgery patients and controls; (2) no significant difference was found in subjective reported symptoms of pain, clicking, crepitation, locking, stiffness, headaches and migraines between the groups; and (3)there was a significant difference in the popping of the joints for surgery and non-surgery groups. CONCLUSION: Jaw tracking did not detect significant differences in jaw function, but some clinical symptoms were present.


Asunto(s)
Cirugía Ortognática , Procedimientos Quirúrgicos Ortognáticos , Trastornos de la Articulación Temporomandibular , Adulto , Humanos , Movimiento , Articulación Temporomandibular
4.
J Orthod ; 47(2): 156-162, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32126863

RESUMEN

This case report describes the successful second surgical treatment of a 26-year-old white female patient with a retrognathic mandible and previous bilateral total joint prostheses placement. The patient had previously presented with bilateral idiopathic condylar resorption (ICR) which caused clockwise mandibular rotation and resulted in anterior open bite and a retrognathic mandible. The patient had undergone definitive corrective for the ICR where condylectomies were performed bilaterally. In addition, total joint prostheses using 'stock joints' were used to restore the condyle and glenoid fossa on both sides. Although the previous surgery corrected the anterior open bite and restored the condyles, the patient was still suffering from joint symptoms (significant pain), restricted mandibular movements, increased overjet (12 mm) and a retrognathic mandible. The treatment plan included a combined orthodontic surgical approach: (1) bimaxillary orthognathic surgery: a surgical procedure on the mandible to reposition the prosthetic joints and correct the mandible position, and a segmental LeFort I to expand the maxilla; and (2) post-surgical orthodontics treatment to detail the occlusion. At the end of the treatment, good aesthetic and functional results were obtained with the cooperation of two specialties. This case emphasises the importance of three-dimensional planning and multidisciplinary treatment when addressing complex jaw movements. It also emphasises the importance orthodontic planning and collaboration with the orthodontist.


Asunto(s)
Prótesis Articulares , Procedimientos Quirúrgicos Ortognáticos , Adulto , Femenino , Humanos , Mandíbula , Cóndilo Mandibular , Reoperación , Articulación Temporomandibular
5.
Int Orthod ; 18(1): 178-190, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31668665

RESUMEN

This case reports the unsuccessful first treatment and the subsequent retreatment of a 35-year old Asian female with a skeletal class II with bimaxillary protrusion, complicated by a deep bite and vertical maxillary excess. This case report highlights the multiple facets of a challenging treatment plan and discusses the ramifications of treatment when treatment does not go as planned. The initial treatment plan consisted of a surgical approach with a maxillary Le Fort I surgery to correct the malocclusion as per the patient's requests without mandibular surgery due to the inherent risk of paraesthesia. The second treatment plan consisted of a bimaxillary surgery with genioplasty. The surgical treatment utilized virtual surgical planning (VSP). The orthodontic treatment was concluded with a corrected overjet and overbite achieving optimum function and balancing the facial profile aesthetically. This case report highlights the need for clear communication of the treatment plan and also the unpredictability of certain treatment outcomes especially when the literature does not provide for definitive conclusions. In addition, it sheds light on the challenge of unpredictable response of soft tissue after surgical treatment and the importance of patient expectations of outcomes. It is hoped that the paper provides a platform for future discussions of difficult malocclusions.

6.
Am J Orthod Dentofacial Orthop ; 156(5): 685-693, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31677677

RESUMEN

The treatment of skeletal Class III malocclusion with anterior open bite is a complex and challenging aspect of orthodontics. Facial esthetic factors, practicality and the anticipated stability of a provisional surgical plan must all be factored into the final decision of the actual orthodontic-orthognathic treatment. This case report presents the multidisciplinary treatment of a 39-year-old female patient with skeletal Class III, severe open bite with first dental contact being on the second molars, lateral crossbite, and crowding in both arches. The nonextraction treatment started with aligning and leveling of the teeth in both arches followed by an initial surgical plan based on the clinical evaluation of the smile esthetics. Precise surgical planning information was imported into the Virtual Surgica (VSP Orthognathics) workflow to visualize the direction and amount of movement necessary. The final plan was adjusted because of anticipated practical limitations of the surgery as well as to insure the stability. LeFort I, bilateral sagittal split osteotomies, and setback genioplasty were thus performed. After the surgery, the treatment concluded with the fine adjustment of the occlusion. In the end, good esthetic and functional outcomes with long-term stability were achieved as a result of this delicate multidisciplinary approach.


Asunto(s)
Maloclusión de Angle Clase III , Maloclusión , Mordida Abierta , Ortodoncia Correctiva , Interfaz Usuario-Computador , Adulto , Cefalometría , Estética Dental , Femenino , Mentoplastia , Humanos , Maloclusión de Angle Clase III/cirugía
7.
J Clin Med ; 8(10)2019 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-31614700

RESUMEN

Preterm infants are at higher risk for both symmetrical and asymmetrical head molding. This study involved 3D stereophotogrammetry to assess the cranial growth, molding, and incidence of deformational plagiocephaly (DP) in preterm children compared to term born children. Thirty-four preterm infants and 34 term born controls were enrolled in this study from Oulu University Hospital, Finland. Three-dimensional head images were obtained at the age of 2-4 months (T1), 5-7 months (T2), 11-13 months (T3), and 2.5-3 years (T4) from the term equivalent age (TEA). There was no statistically significant difference in oblique cranial length ratio (OCLR), cephalic index (CI), or weighted asymmetry score (wAS) between the two groups. Occipital flattening, defined by flatness score (FS) was statistically significantly greater in the preterm group than in the term group at T1-T4 (p < 0.05). In both groups, OCLR improved gradually over time. There were no instances, in either group, of severe DP and no moderate DP after T2. Results indicate that DP affects preterm and full-term children almost equally during the first three years of life, and cranial asymmetry resolves at a similar rate in both preterm and term groups after three months of corrected age. Preterm infants present with more occipital flattening than full-term children.

8.
Am J Orthod Dentofacial Orthop ; 156(1): 125-136, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31256825

RESUMEN

This case report describes the successful treatment of a 14-year-old girl with severe bilateral idiopathic condylar resorption and resultant mandibular retrusion, increased overjet, and anterior open bite. The nonextraction treatment plan included (1) aligning and leveling the teeth in both arches, (2) performing Le Fort I maxillary osteotomy, bilateral condylectomy, and mandibular joint replacement, and (3) postsurgical correction of the malocclusion. The orthodontic treatment was initiated with the use of custom lingual appliances followed by orthognathic surgery planned with virtual surgical planning. Patient-fitted and customized temporomandibular joint implants were designed and manufactured based on the patient's stereolithic bone anatomic model. Treatment was concluded with detailed orthodontic finishing. Optimum esthetic and functional results were achieved with the cooperation of 2 specialties and the use of state-of-the-art technology.


Asunto(s)
Tirantes , Prótesis Articulares , Cóndilo Mandibular/cirugía , Mordida Abierta/cirugía , Mordida Abierta/terapia , Ortodoncia Correctiva/métodos , Procedimientos Quirúrgicos Ortognáticos/métodos , Trastornos de la Articulación Temporomandibular/terapia , Adolescente , Puntos Anatómicos de Referencia , Resorción Ósea/complicaciones , Resorción Ósea/diagnóstico por imagen , Resorción Ósea/cirugía , Resorción Ósea/terapia , Cefalometría , Estética Dental , Femenino , Humanos , Imagenología Tridimensional , Mandíbula/cirugía , Cóndilo Mandibular/diagnóstico por imagen , Maxilar/cirugía , Mordida Abierta/diagnóstico por imagen , Aparatos Ortodóncicos , Aparatos Ortodóncicos Fijos , Ortodoncia Correctiva/instrumentación , Osteotomía , Planificación de Atención al Paciente , Radiografía Panorámica , Articulación Temporomandibular/diagnóstico por imagen , Articulación Temporomandibular/cirugía , Trastornos de la Articulación Temporomandibular/complicaciones , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/cirugía , Resultado del Tratamiento
9.
Oral Maxillofac Surg Clin North Am ; 31(3): 457-472, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31126730

RESUMEN

Digital imaging technology and refined software programs have significantly improved a clinician's ability to assess and evaluate anatomic structures and quantify both defect size and required graft volume. This article summarizes the computed tomography-based technology used in these applications to illustrate their current use as exemplified by computer-assisted planning and treatment of severe maxillofacial atrophy treated using both interpositional and mesh-onlay grafting methodology.


Asunto(s)
Implantación de Prótesis Maxilofacial/métodos , Planificación de Atención al Paciente , Procedimientos Quirúrgicos Reconstructivos/métodos , Cirugía Asistida por Computador , Atrofia , Trasplante Óseo/métodos , Humanos , Imagenología Tridimensional/métodos , Programas Informáticos , Tomografía Computarizada por Rayos X/métodos
10.
Angle Orthod ; 89(3): 365-371, 2019 05.
Artículo en Inglés | MEDLINE | ID: mdl-30719933

RESUMEN

OBJECTIVES: To determine the effect of Clinpro 5000, Clinpro Tooth Crème, and MI-Paste Plus on the formation of white spot lesions in patients undergoing orthodontic treatment. MATERIALS AND METHODS: Three prospective groups with 40 patients undergoing orthodontic treatment in each group were evaluated (total recruitment = 120 subjects). The selected product was brushed on for 2 minutes twice daily for 4 months. Subjects were reviewed for 4 months on a monthly basis. The Enamel Decalcification Index (EDI) was used to determine the number of white spot lesions per surface at each visit. RESULTS: 100 subjects (35 using Clinpro 5000, 32 using Clinpro Tooth Crème, and 33 using MI Paste Plus) completed the study. The data lend strong support for Clinpro 5000 providing superior protection against enamel decalcification when compared to Clinpro Crème, and mixed support when compared to MI Paste Plus. CONCLUSIONS: The use of Clinpro 5000, Clinpro Crème, and MI paste Plus all have a reduction effect on white spot lesions when compared to studies reported previously. Clinpro 5000 has a marginally better effect than the two other test pastes. The results of this study can be used by clinicians when deciding the effectiveness of using fluoride dentifrice products to prevent white spot lesions in their orthodontic practice (ClinicalTrials.gov ID: NCT03440996).


Asunto(s)
Caries Dental , Dentífricos , Técnicas de Movimiento Dental , Cariostáticos , Caries Dental/prevención & control , Dentífricos/uso terapéutico , Fluoruros , Humanos , Estudios Prospectivos , Remineralización Dental
11.
Pediatr Rheumatol Online J ; 16(1): 32, 2018 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-29695255

RESUMEN

BACKGROUND: Arthritis involving the temporomandibular joint (TMJ) complicates 40 - 96% of cases of juvenile idiopathic arthritis (JIA), potentially leading to devastating changes to form and function. Optimal evaluation and management of this joint remains a matter of ongoing discussion. METHODS: We performed a PubMed search for all articles with keywords "temporomandibular" and "arthritis", covering the dates 2002 through February 28, 2018. A separate PubMed search was performed for all articles with keywords "temporomandibular joint", "arthritis", and "treatment" covering the same dates. FINDINGS: The TMJ is a particularly challenging joint to assess, both clinically and with imaging studies. Clinical assessment of the TMJ is hampered by the low sensitivity of joint pain as well as the absence of physical exam findings early in the disease process. As with all joints, plain radiography and computed tomography only detect arthritic sequelae. Additionally, there is mixed data on the sensitivity of ultrasound, leaving magnetic resonance imaging (MRI) as the optimal diagnostic modality. However, several recent studies have shown that non-arthritic children can have subtle findings on MRI consistent with TMJ arthritis, such as joint effusion and contrast enhancement. Consequently, there has been an intense effort to identify features that can be used to differentiate mild TMJ arthritis from normal TMJs, such as the ratio of the enhancement within the TMJ itself compared to the enhancement in surrounding musculature. With respect to treatment of TMJ arthritis, there is minimal prospective data on medical therapy of this complicated joint. Retrospective studies have suggested that the response to medical therapy of the TMJ may lag behind that of other joints, prompting use of intraarticular (IA) therapy. Although most studies have shown short-term effectiveness of corticosteroids, the long-term safety of this therapy on local growth as well as on the development of IA heterotopic bone have prompted recommendations to limit use of IA corticosteroids. Severe TMJ disease from JIA can also be managed non-operatively with splints in a growing child, as well as with surgery. CONCLUSION: In this review, we summarize literature on the diagnosis and management of TMJ arthritis in JIA and suggest a diagnostic and therapeutic algorithm for children with refractory TMJ arthritis.


Asunto(s)
Artritis Juvenil/complicaciones , Trastornos de la Articulación Temporomandibular/diagnóstico , Articulación Temporomandibular/patología , Artritis Juvenil/tratamiento farmacológico , Femenino , Glucocorticoides/efectos adversos , Glucocorticoides/uso terapéutico , Humanos , Masculino , Trastornos de la Articulación Temporomandibular/etiología , Trastornos de la Articulación Temporomandibular/terapia
12.
Ann Maxillofac Surg ; 7(2): 296-299, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29264302

RESUMEN

Short root anomaly (SRA) is a poorly understood developmental disorder and can significantly compromise the patient's dental treatment. This case report describes the treatment of a 15-year-old girl with SRA and discusses the implication of this disorder on orthodontic and orthognathic treatment of patients.

13.
Am J Orthod Dentofacial Orthop ; 151(1): 174-185, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28024773

RESUMEN

We report on the successful treatment of a 32-year-old woman with condylar hyperplasia and severe mandibular crowding. In addition, her maxilla was canted to the right, her mandibular midline and chin point deviated to the left, and her maxillary canines were missing. The treatment plan included (1) aligning and leveling the teeth in both arches, (2) correcting overbite and overjet, (3) performing LeFort I osteotomy and bilateral split osteotomies, and (4) correcting the malocclusion postsurgically. The orthodontic treatment was performed with custom lingual braces and clear brackets, and virtual surgical planning techniques were used to plan the orthognathic surgery. The condylar hyperplasia and the mandibular crowding were corrected. At the end of treatment, the patient's face appeared symmetrical. The results suggest that esthetic and functional results can be achieved with the cooperation of 2 specialties and the use of state-of-the-art technology.


Asunto(s)
Maloclusión de Angle Clase II/patología , Maloclusión/terapia , Cóndilo Mandibular/patología , Soportes Ortodóncicos , Adulto , Tomografía Computarizada de Haz Cónico , Femenino , Humanos , Hiperplasia , Maloclusión/diagnóstico por imagen , Maloclusión/patología , Maloclusión de Angle Clase II/diagnóstico por imagen , Maloclusión de Angle Clase II/terapia , Cóndilo Mandibular/diagnóstico por imagen , Procedimientos Quirúrgicos Ortognáticos/métodos , Planificación de Atención al Paciente , Radiografía Panorámica
14.
Plast Reconstr Surg Glob Open ; 4(9): e865, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27757330

RESUMEN

The purpose of this study is to compare 3-dimensional facial averages of Asians (Koreans and Chinese) and Houstonian white faces using a (3-dimensional) surface imaging system. METHODS: Three-dimensional images of Korean adults (Seoul, Korea) with class I malocclusion captured using the 3dMDface. The images of 138 Koreans were processed to generate average male and female facial shells using Rapidform 2006 plus pack 2 software and then superimposed and compared with the average shells of Chinese adults (Xi' An, China) and white adults (Houston, Tex.). RESULTS: The average Korean male and female faces were wider with prominent malar and zygomatic areas when compared with the white faces. The average white male and female faces showed more protrusion in the glabella, nasion, rhinion, and the soft-tissue pogonion than the Korean faces. The average Korean male face was retrusive at masseteric region while having more prominent lips, nasal tip, and supraglabella than the Chinese counterpart. The average Korean female face was narrower than the average Chinese female face, but there was more protrusion in the periorbital, nasal tip, and malar region seen in the Korean female face. CONCLUSIONS: Although the average faces of Chinese and Korean populations in this study showed remarkable similarities, there were distinct differences seen in the facial morphology of the 2 Asian groups. Three-dimensional imaging can be effectively used to establish population facial norms and to quantify the variations seen between different ethnicities. This information may be used in the clinical environment for plastic, oral, and maxillofacial surgery and orthodontics.

16.
J Craniofac Surg ; 27(1): e71-5, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26703056

RESUMEN

BACKGROUND: Facial anthropometric analysis is essential for planning cosmetic and reconstructive facial surgery, but has not been available in detail for modern Greeks. In this study, multiple measurements of the face were performed on young Greek males and females to provide a complete facial anthropometric profile of this population and to compare its facial morphology with that of North American Caucasians. MATERIALS AND METHODS: Thirty-one direct facial anthropometric measurements were obtained from 152 Greek students. Moreover, the prevalence of the various face types was determined. The resulting data were compared with those published regarding North American Caucasians. RESULTS: A complete set of average anthropometric data was obtained for each sex. Greek males, when compared to Greek females, were found to have statistically significantly longer foreheads as well as greater values in morphologic face height, mandible width, maxillary surface arc distance, and mandibular surface arc distance. In both sexes, the most common face types were mesoprosop, leptoprosop, and hyperleptoprosop. Greek males had significantly wider faces and mandibles than the North American Caucasian males, whereas Greek females had only significantly wider mandibles than their North American counterparts. CONCLUSIONS: Differences of statistical significance were noted in the head and face regions among sexes as well as among Greek and North American Caucasians. With the establishment of facial norms for Greek adults, this study contributes to the preoperative planning as well as postoperative evaluation of Greek patients that are, respectively, scheduled for or are to be subjected to facial reconstructive and aesthetic surgery.


Asunto(s)
Cefalometría/métodos , Grupo de Ascendencia Continental Europea , Cara/anatomía & histología , Adolescente , Adulto , Puntos Anatómicos de Referencia/anatomía & histología , Arco Dental/anatomía & histología , Oído Externo/anatomía & histología , Femenino , Frente/anatomía & histología , Grecia , Humanos , Labio/anatomía & histología , Masculino , Mandíbula/anatomía & histología , Maxilar/anatomía & histología , Boca/anatomía & histología , América del Norte , Nariz/anatomía & histología , Órbita/anatomía & histología , Valores de Referencia , Factores Sexuales , Cráneo/anatomía & histología , Dimensión Vertical , Adulto Joven
17.
Dent Clin North Am ; 58(3): 653-69, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24993927

RESUMEN

Orthodontics and cone beam computed tomography technology have evolved tremendously in the last 10 years. The technology has evolved from a predominantly diagnostic entity to a true clinical and translational product. One can believe that this technology is here to stay and it has a real role to revolutionize the efficiency and effectiveness of orthodontic care. This article discusses the current advancements and use of cone beam computed tomography.


Asunto(s)
Tomografía Computarizada de Haz Cónico/métodos , Ortodoncia/métodos , Cefalometría/métodos , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Imagenología Tridimensional/métodos , Procedimientos Quirúrgicos Ortognáticos/métodos , Planificación de Atención al Paciente , Tecnología Odontológica
18.
Artículo en Inglés | MEDLINE | ID: mdl-24470774

RESUMEN

Photobiomodulation is used to accelerate tooth movement during orthodontic treatments. The changes in root morphology in a group of orthodontic patients who received photobiomodulation were evaluated using the cone beam computed tomography technique. The device used is called OrthoPulse, which produces low levels of light with a near infrared wavelength of 850 nm and an intensity of 60 mW/cm(2) continuous wave. Twenty orthodontic patients were recruited for these experiments, all with class 1 malocclusion and with Little's Irregularity Index (>2 mm) in either of the arches. Root resorption was detected by measuring changes in tooth length using cone beam computed tomography. These changes were measured before the orthodontic treatment and use of low-level laser therapy and after finishing the alignment level. Little's Irregularity Index for all the patients was calculated in both the maxilla and mandible and patients were divided into three groups for further analysis, which were then compared to the root resorption measurements. Our results showed that photobiomodulation did not cause root resorption greater than the normal range that is commonly detected in orthodontic treatments. Furthermore, no correlation between Little's Irregularity Index and root resorption was detected.

19.
Prog Orthod ; 14: 42, 2013 Oct 29.
Artículo en Inglés | MEDLINE | ID: mdl-24326040

RESUMEN

Nowadays, there is an increased tendency for researches to focus on accelerating methods for tooth movement due to the huge demand for adults for a shorter orthodontic treatment time. Unfortunately, long orthodontic treatment time poses several disadvantages like higher predisposition to caries, gingival recession, and root resorption. This increases the demand to find the best method to increase tooth movement with the least possible disadvantages. The purpose of this study is to view the successful approaches in tooth movement and to highlight the newest technique in tooth movement. A total of 74 articles were reviewed in tooth movement and related discipline from 1959 to 2013. There is a high amount of researches done on the biological method for tooth movement; unfortunately, the majority of them were done on animals. Cytokine, PTH, vitamin D, and RANKL/RANK/OPG show promising results; on the other hand, relaxin does not accelerate tooth movement, but increases the tooth mobility. Low-level laser therapy has shown positive outcome, but further investigation should be done for the best energy and duration to achieve the highest success rate. Surgical approach has the most predictable outcomes but with limited application due to its aggressiveness. Piezocision technique is considered one of the best surgical approaches because it poses good periodontal tissue response and excellent aesthetic outcome. Due to the advantages and disadvantages of each approach, further investigations should be done to determine the best method to accelerate tooth movement.


Asunto(s)
Técnicas de Movimiento Dental/métodos , Productos Biológicos/uso terapéutico , Investigación Dental , Humanos , Terapia por Luz de Baja Intensidad/métodos , Osteotomía/métodos , Piezocirugía/métodos , Factores de Tiempo , Técnicas de Movimiento Dental/instrumentación , Resultado del Tratamiento
20.
Head Face Med ; 9: 13, 2013 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-23601073

RESUMEN

OBJECTIVE: To assess the amount of maxillary and mandibular inter-radicular bone mass and determine the most reliable mini-screw placement sites. MATERIALS AND METHODS: Retrospective Cone Beam Computed Tomography (CBCT) images of 40 Angle Class I subjects (20 females, 20 males, aged 16 to 32) were obtained. Measurements on the buccal (BI), medial (MI) and lingual (LI) sides of the inter-radicular spaces were taken at 0, 1, 2, 3, 4, 5 mm from the cemento-enamel junction (CEJ) in an apical direction. RESULTS: The male and female BI scores ranged from 2.99±0.73 mm to 6.18±1.03 mm and 2.69±0.84 mm to 6.21±1.22 mm respectively. The male and female MI scores ranged from 1.36±0.38 mm to 4.50±0.99 and 1.53±0.66 to 4.77±1.99 mm respectively. LI scores ranged from 2.37±0.70 to 6.47±1.0 mm and 2.45±0.56 mm and 6.66±1.33 mm respectively. In both maxillary and mandibular arch, the inter-radicular space increased in the apical direction except for the buccal and medial inter-radicular spaces between the maxillary first and second molars. CONCLUSION: The medial inter-radicular spaces are the decisive parameter for mini-screw placement. In the maxillary arch, regions between central and lateral incisors, lateral incisor and canine, first and second molars are not viable for mini-screw insertion. The residual inter-radicular regions are proper for implantation at 3 mm above the CEJ. In the mandible, the regions between incisors and canines are too narrow for mini-screw insertion and the reliable sites for mini-screws are regions between premolars, molars or first molar and second premolar at 2 mm below the CEJ.


Asunto(s)
Tornillos Óseos , Tomografía Computarizada de Haz Cónico/métodos , Implantes Dentales , Mandíbula/diagnóstico por imagen , Maxilar/diagnóstico por imagen , Métodos de Anclaje en Ortodoncia/métodos , Movilidad Dentaria/diagnóstico por imagen , Adolescente , Adulto , Diente Premolar , Cefalometría/métodos , Arco Dental , Femenino , Humanos , Masculino , Estudios Retrospectivos , Movilidad Dentaria/cirugía , Adulto Joven
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