scholarly journals Invisalign eighth-generation features for deep-bite correction and posterior arch expansion

2021 ◽  
Author(s):  
MAZYAR MOSHIRI ◽  
NEAL D KRAVITZ ◽  
JONATHAN NICOZISIS ◽  
SHAWN MILLER
Keyword(s):  
Posterior Arch ◽  
Deep Bite

scholarly journals Prevalência de maloclusão na dentição decídua

2021 ◽  
Vol 42 (2) ◽  
pp. 8-11
Author(s):  
Fernanda Ullmann López ◽  
Giovana Martins Cezar ◽  
Gislaine Crippa Ghisleni ◽  
Janice Cogo Farina ◽  
Karine Pires Beltrame ◽  
...  
Keyword(s):  
Public Schools ◽  
Open Bite ◽  
Posterior Arch ◽  
Type I ◽  
Class Iii ◽  
Porto Alegre ◽  
Deciduous Dentition ◽  
Anterior Open Bite ◽  
Deep Bite ◽  
The City

The aim of this study was to evaluate the prevalence of open bite, deep bíte, cross-bíte, occurrerrce of physiolological diastema premature dental loss and antero-posteríor arch relatíonship, according to Angle's classification modified to deciduous dentition in children aged 3-5 years. The sample was made up by 567 children, 294 males and 273 females who where registred ín public schools ín the cíty of Porto Alegre RS. The results indicated that the anterior open bíte has a híghfrequency ín deciduos dentítíon (38.80%) that in posteior open bite was not significant (0,35%) Deep bite presents a rate of 24.52%. The prevalence of cross-bíte ín this stage of dentítíon is I7,46%. whích unilateral posteior cross-bíte has the híghest rate (9.35%). The more prevalent arch Type is the Baume's Type I arch, found ín 73.19% of the sample. Observing the antero-posteior arch relationship, the rate of 64.20% was obtained to Class I, 18.52% to Closs II maloccluion and finally 17.28% to Class III maloccluion.

DISTRIBUSI MALOKLUSI BERDASARKAN KLASIFIKASI ANGLE PADA PASIEN DI DEPARTEMEN ORTODONSIA RSGMP FKG USU TAHUN 2009-2013

2015 ◽  
Vol 18 (3) ◽  
pp. 257-261
Author(s):  
Mimi Marina Lubis ◽  
Andira Retno Utami
Keyword(s):  
Open Bite ◽  
Deep Bite ◽  
Purposive Sampling

Maloklusi merupakan masalah kesehatan mulut dengan prevalensi tertinggi ketiga setelah karies dan penyakitperiodontal. Distribusi maloklusi menunjukkan hasil yang berbeda-beda dengan prevalensi cukup tinggi pada setiappopulasi di dunia. Tujuan penelitian ini adalah untuk mengetahui distribusi maloklusi berdasarkan klasifikasi Angle danmelihat apakah terdapat perbedaan antara laki-laki dan perempuan. Jenis penelitian ini adalah penelitian deskriptifmenggunakan 385 rekam medik dan model studi pasien di Departemen Ortodonsia RSGMP FKG USU tahun 2009-2013. Pemilihan sampel dilakukan menggunakan metode purposive sampling berdasarkan kriteria inklusi dan eksklusi.Hasil penelitian menunjukkan 41,55 % sampel memiliki hubungan molar Klas I Angle, 26,75 % Klas II subdivisi, 18,44% Klas II divisi 1, 5,71 % Klas III subdivisi, 4,67 % Klas II divisi 2 dan 2,85 % Klas III. Bentuk maloklusi yang palingumum adalah crowding rahang bawah 49,61 %, crossbite anterior 30,90 % dan spacing rahang atas 21,55 %. Sebanyak40,25 % sampel memiliki overjet normal, 19,48 % overjet berlebih, 69,61 % overbite normal, 14,02 % deep bite, 9,35 %edge to edge dan 7,79 % open bite. Deep bite menunjukkan adanya perbedaan distribusi berdasarkan jenis kelamin.

scholarly journals FRI0431 PROFILE OF INFECTIOUS SPONDYLODISCITIS ACCORDING TO THE SITE: UNIFOCAL VERSUS MULTIFOCAL

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 814.3-814
Author(s):  
A. Ben Tekaya ◽  
L. Ben Ammar ◽  
M. Ben Hammamia ◽  
O. Saidane ◽  
S. Bouden ◽  
...  
Keyword(s):  
Current Problem ◽  
Common Factor ◽  
Cord Compression ◽  
Posterior Arch ◽  
Significant Difference ◽  
Infectious Spondylodiscitis ◽  
Vertebral Biopsy ◽  
Inflammatory Syndrome ◽  
Different Levels ◽  
A Current

Background:Infectious spondylodiscitis is a therapeutic emergency and is a current problem. It can affect the different levels of the spine. Multifocal forms, touching several floors, however remain rare.Objectives:To compare the clinical, biological, radiological and therapeutic aspects of unifocal versus multifocal spondylodiscitis.Methods:This is a retrospective study of 113 patients admitted to our service over a period of 20 years [1998-2018]. The diagnosis of spondylodiscitis was made on the basis of clinical, biological, radiological and bacteriological data. We have divided our population into two groups: unifocal and multifocal spondylodiscitis.Results:Spondylodiscitis was more frequently unifocal (75.2%) than multifocal (24.8%). The average age of the patients was 55.8 years. There were 62 men and 51 women. There was no difference in age and sex between the two groups (p=0.5 and p=0.8, respectively).Diabetes was more frequent in the group of multifocal spondylodiscitis but with no statistically significant difference (p=0.4). No statistically significant difference between the two groups regarding the start mode (p=0.7), the schedule (p=0.3), the presence of neurological signs (p=0.7), fever (p = 0.2), impaired general condition (p=0.6) and biological inflammatory syndrome (p=0.6).Cervical and dorsal spine involvement was more common in multifocal spondylodiscitis (p = 0.02 and p = 0.01; respectively). There were 11 spondylodiscitis involving 2 floors (cervical and dorsal: 2 cases, cervical and lumbar: 3 cases, dorsal and lumbar: 6 cases) and 3 spondylodiscitis involving 3 floors.Radiologically, the presence of vertebral fracture and involvement of the posterior arch was more frequent during the multifocal form (p=0.03 and p=0.001; respectively). The frequency of para-vertebral abscesses, epiduritis and the presence of spinal cord compression were similar in the two groups (p=0.6; p=0.7 and p=0.2, respectively).Tuberculosis was more frequent during the multifocal form (p = 0.05) and brucellosis during the unifocal form (p = 0.03). Disco-vertebral biopsy was performed in 79 cases. It was more often contributory during multifocal spondylodiscitis (p = 0.03).The occurrence of immediate complications was more frequent in multifocal spondylodiscitis but with no statistically significant difference (p=0.2).Conclusion:Multifocal sppondylodiscitis is seen mainly in immunocompromised subjects. Our study found that diabetes is the most common factor in immunosuppression. Note also the predominance of involvement of the posterior elements, tuberculous origin and immediate complications.Disclosure of Interests:None declared

Posterior Midline Approach for a C2 Schwannoma: 2-Dimensional Operative Video

2020 ◽  
Author(s):  
Sorin Aldea ◽  
Abdu Alkhairy ◽  
Irina Joitescu ◽  
Caroline Le Guerinel
Keyword(s):  
Posterior Approach ◽  
Main Step ◽  
Surgical Removal ◽  
Posterior Arch ◽  
Favorable Result ◽  
Lateral Compression ◽  
Bone Removal ◽  
Far Lateral ◽  
Midline Approach ◽  
Posterior Midline

Abstract C2 schwannomas are rare lesions that may develop in the spinal canal, in the area of the C2 ganglion situated posterior to the C1C2 articulation, in the extraspinal area or in a combination of these 3 sectors.1,2 The surgical removal of these lesions is delicate because of the intimate relationships the schwannomas develop with the V3 segment of the vertebral artery.  A variety of lateral, far-lateral, or extreme lateral approaches have been described in order to tackle these lesions. We use a posterior midline approach that takes advantage of the predominantly extradural development of C2 schwannomas. In this technique, the main step is the debulking of the posterior articular sector of the tumor, which is easily accessible through a midline posterior approach and necessitates minimal bone removal. In most cases, removal of the homolateral posterior arch of C1 is sufficient in order to create an adequate access. These maneuvers create the necessary space for dissecting both the intradural and extraspinal sectors of the schwannoma.  We present this technique through a case with a minimal intradural component exerting mainly a lateral compression of the spinal cord. The tumor was operated through the midline mini-invasive posterior approach with a favorable result. We demonstrate the surgical technique in video and discuss the nuances.

scholarly journals Resection of a Lower Clival Meningioma via Posterolateral Approach: Two-Dimensional Operative Video

2020 ◽  
Author(s):  
Pinar E. Ocak ◽  
Selcuk Yilmazlar
Keyword(s):  
Cranial Nerve ◽  
Cranial Nerves ◽  
Posterolateral Approach ◽  
Left Vertebral Artery ◽  
Posterior Arch ◽  
Upper Cervical Spine ◽  
Two Dimensional ◽  
Lower Cranial Nerve ◽  
Complex Anatomy ◽  
Microsurgical Resection

Abstract Objectives This study aimed to demonstrate resection of a craniovertebral junction (CVJ) meningioma via the posterolateral approach. Design The study is designed with a two-dimensional operative video. Setting This study is conducted at department of neurosurgery in a university hospital. Participants A 50-year-old woman who presented with lower cranial nerve findings due to a left-sided lower clival meningioma (Fig. 1). Main Outcome Measures Microsurgical resection of the meningioma and preservation of the neurovascular structures. Results The patient was placed in park-bench position and a left-sided retrosigmoid suboccipital craniotomy, followed by C1 hemilaminectomy and unroofing the lip of the foramen magnum, was performed. The dural incision extended from the suboccipital region down to the posterior arch of C2 (Fig. 2). The arachnoid overlying the tumor was incised, revealing the course of the cranial nerve (CN) XI on the dorsolateral aspect of the tumor. The left vertebral artery (VA) was encased by the tumor which was originating from the dura below the jugular foramen. The mass was resected in a piecemeal fashion eventually. At the end of the procedure, all relevant cranial nerves and adjacent vascular structures were intact. Postoperative magnetic resonance imaging (MRI) confirmed total resection and the patient was discharged home on postoperative day 3 safely. Conclusions Microsurgical resection of the lesions of the CVJ are challenging as this transition zone between the cranium and upper cervical spine has a complex anatomy. Since adequate exposure of the extradural and intradural segments of the VA can be obtained by the posterolateral approach, this approach can be preferred in cases with tumors anterior to the VA or when the artery is encased by the tumor.The link to the video can be found at: https://youtu.be/d3u5Qrc-zlM.

Posterior arch reconstruction in cervical surgery to restore the global biomechanics of the Atlas: a technical note

2021 ◽  
pp. 1-4
Author(s):  
Giuseppe Palmieri ◽  
Fabio Cofano ◽  
Nicola Marengo ◽  
Marco Ajello ◽  
Francesco Zenga ◽  
...  
Keyword(s):  
Technical Note ◽  
Posterior Arch ◽  
Cervical Surgery ◽  
Arch Reconstruction

scholarly journals Cervical vertebral body fusions in patients with skeletal deep bite

2007 ◽  
Vol 29 (5) ◽  
pp. 464-470 ◽  
Author(s):  
L. Sonnesen ◽  
I. Kjaer
Keyword(s):  
Vertebral Body ◽  
Deep Bite ◽  
Cervical Vertebral Body

Use of a titanium mesh cage for posterior atlantoaxial arthrodesis

2002 ◽  
Vol 96 (1) ◽  
pp. 127-130 ◽  
Author(s):  
Morio Matsumoto ◽  
Kazuhiro Chiba ◽  
Takashi Tsuji ◽  
Hirofumi Maruiwa ◽  
Yoshiaki Toyama ◽  
...  
Keyword(s):  
Donor Site ◽  
Atlantoaxial Instability ◽  
Os Odontoideum ◽  
Posterior Arch ◽  
Rigid Fixation ◽  
Titanium Mesh ◽  
Content Type ◽  
Atlantoaxial Fixation ◽  
Mesh Cage ◽  
Atlantoaxial Arthrodesis

✓ The authors placed titanium mesh cages to achieve posterior atlantoaxial fixation in five patients with atlantoaxial instability caused by rheumatoid arthritis or os odontoideum. A mesh cage packed with autologous cancellous bone was placed between the C-1 posterior arch and the C-2 lamina and was tightly connected with titanium wires. Combined with the use of transarticular screws, this procedure provided very rigid fixation. Solid fusion was achieved in all patients without major complications. The advantages of this method include more stable fixation, better control of the atlantoaxial fixation angle, and reduced donor-site morbidity compared with a conventional atlantoaxial arthrodesis in which an autologous iliac crest graft is used.

scholarly journals Correlations between dentoskeletal variables and deep bite in Class II Division 1 individuals

2011 ◽  
Vol 25 (1) ◽  
pp. 56-62 ◽  
Author(s):  
Leandro Silva Marques ◽  
Mônica Costa Armond ◽  
Maria Letícia Ramos-Jorge ◽  
Raquel Gonçalves Vieira de Andrade ◽  
Ana Maria Bolognese
Keyword(s):  
Class Ii ◽  
Deep Bite ◽  
Division 1 ◽  
Class Ii Division 1
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