Extra-oral approach to lower third molar: a rare surgical indication

Kista dentigerus merupakan kista yang berhubungan dengan gigi yang tidak erupsi berasal dari sisa epitelial organ pembentuk gigi. Gejala klinis menunjukkan pembengkakan yang tumbuh lambat dan tidak sakit pada rahang. Gambaran radiografis memperlihatkan area radiolusen uniokular yang mengelilingi mahkota gigi yang tidak erupsi. Proses infeksi kronis pada kista dentigerus dapat menyebar lambat membentuk abses subperiosteal dan melewati barrier kulit membentuk fistel ekstra oral. Studi kasus ini laporkan seorang wanita 56 tahun yang datang ke poli Bedah Mulut dan Maksilofasial RSUP Dr Sardjito dengan kasus kista dentigerus pada regio angulus mandibula kanan dengan fistel ekstra oral pada pipi kanan. Penatalaksanaan kasus adalah pemberian antibiotik, enukleasi kista, pengambilan gigi 45, 47 dan 48 yang impaksi sertafistulektomi dengan pendekatan ekstra oral dan sinus shoe polishing technique di bawah bius umum. Evaluasi 3 minggu pasca operasi menunjukkan penyembuhan ekstra oral dan intra oral sempurna serta tidak terbentuk jaringan parut. ABSTRACT: Management of Infected Dentigerous Cyst with Extra Oral Fistulae on Right Cheek. Dentigerous cyst is an odontogenic cyst associated with unerupted teeth from epithelial remnant teeth organ. The clinical appearance shows slow-growing painless swelling lesion in jaw. The radiografics reveals uniocular radiolucency surrounding unerupted teeth. The chronic infection proccess in dentigerous cyst could spread slowly forming subperiosteal abcess and, through cutaneous barrier, it forms extra oral fistulae. We reported a 56 year old woman who came to RSUP Dr Sardjito with dentigerous cyst in mandible angulus with extra oral fistulae in the right cheek. The treatment consisted of antibiotic medication; cyst enucleation; removal of unerupted third molar, second premolar, second molar; and fistulectomy with extra oral approach and sinus shoe polishing technique under general anesthetic. Three week evaluation post surgery shows succesful extra oral and intra oral healing without scarring.

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Odontektomi Gigi Molar Ketiga Mandibula Impaksi Ektopik dengan Kista Dentigerous secara Ekstraoral

Majalah Kedokteran Gigi Klinik ◽

10.22146/mkgk.11956 ◽

2016 ◽

Vol 1 (2) ◽

pp. 85

Author(s):

Edwyn Saleh ◽

Prihartiningsih Prihartiningsih ◽

Rahardjo Rahardjo

Keyword(s):

Dentigerous Cyst ◽

Third Molar ◽

General Anesthetic ◽

Impacted Tooth ◽

Submandibular Region ◽

Pathologic Condition ◽

Mandibular Third Molar ◽

Oral Approach ◽

One Year ◽

The Right

Gigi dikatakan impaksi ektopik apabila mengalami malposisi yang disebabkan oleh faktor kongenital atau mengalami perubahan posisi yang disertai dengan kondisi patologis. Kondisi patologis yang sering menyertai gigi impaksi ektopik adalah kista dentigerous. Tujuan dari studi pustaka ini adalah untuk memaparkan odontektomi pada kasus molar ketiga ektopik yangdisertai dengan kista dentigerous. Operasi ini adalah untuk menghilangkan faktor penyebab terjadinya kista dentigerous serta membersihkan lesi kista agar tidak berkembang semakin membesar. Pasien laki-laki 38 tahun mengeluhkan adanya sedikitbenjolan pada pipi sebelah kanan namun tanpa disertai rasa sakit. Benjolan dirasakan mulai muncul dalam satu tahun terakhir.Hasil pemeriksaan radiografik menunjukkan gigi molar ketiga mandibula kanan berada pada sudut angulus mandibula disertaiadanya gambaran radiolusen pada mahkotanya didiagnosa sebagai impaksi ektopik gigi molar ketiga mandibula kanan disertaikista dentigerous. Tindakan operasi odontektomi dan enukleasi kista dentigerous dilakukan secara ekstraoral dengananastesiumum, pemilihan metode pengambilan ekstraoral karena posisi gigi yang telah berubah jauh dari posisi normal gigimolar ketiga mandibula. Telah dilakukan pengambilan gigi molar ketiga mandibula yang impaksi ektopik dan enukleasi kistadentigerous secara ekstraoral, karena posisi gigi impaksi yang ektopik di ramus mandibula. Pengambilan gigi impaksi secaraekstraoral sangat jarang sekali dilakukan, namun jika posisi gigi berada jauh sekali dari posisi normal maka pendekatanekstraoral merupakan metode operasi yang akan mempermudah proses pengambilan gigi dan enukleasi kista serta dapatmeminimalkan hilangnya tulang mandibula yang sehat. ABSTRACT: Odontectomy of Ectopic Third Molar Associated with Dentigerous Cyst in Submandibular Region. Ectopic impacted tooth has been defined as malpositioned tooth caused by congenital factor or malpositioned tooth associated with pathologic condition. Pathologic condition associated with ectopic impacted tooth is dentigerous cyst. The purpose of this operation is to eliminate the causes of the dentigerous cyst and to raise cyst lesions that do not develop as they grow. A 38-year-old male patient complained of a painless slight swelling on his right cheek which occurred in the last one year. The radiograph examination shows an ectopic right mandibular third molar at the posterior border of the right angle of mandible, with an associated coronal radiolucency diagnosed as ectopic impacted right mandibular third molar associated with dentigerous cyst. The tooth and the cyst were removed surgically under general anesthetic via an extra-oral approach due to an extreme malposition of the tooth. The ectopic impacted right mandibular third molar and associated dentigerous cyst had been removed and enucleated surgically via extra-oral approach because the location of the ectopic impacted tooth was in the ramus of mandible. Extra-oral removal of ectopic mandibular third molar is very rare, however this approach will facilitate an easy removal and enucleation of an extremely malpositioned mandibular third molar associated with dentigerous cyst and minimize a loss of healthy mandibular bone.

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High Voltage Electron Microscopy of Ion-Milled Dental Enamel

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100050317 ◽

1974 ◽

Vol 32 ◽

pp. 60-61

Author(s):

L. D. Ackerman ◽

S. H. Y. Wei

Keyword(s):

Electron Microscopy ◽

High Voltage ◽

Third Molar ◽

Polarized Light ◽

Dental Enamel ◽

Longitudinal Section ◽

Ion Milling ◽

High Voltage Electron Microscopy ◽

Voltage Electron ◽

High Voltage Electron

Mature human dental enamel has presented investigators with several difficulties in ultramicrotomy of specimens for electron microscopy due to its high degree of mineralization. This study explores the possibility of combining ion-milling and high voltage electron microscopy as a means of circumventing the problems of ultramicrotomy.A longitudinal section of an extracted human third molar was ground to a thickness of about 30 um and polarized light micrographs were taken. The specimen was attached to a single hole grid and thinned by argon-ion bombardment at 15° incidence while rotating at 15 rpm. The beam current in each of two guns was 50 μA with an accelerating voltage of 4 kV. A 20 nm carbon coating was evaporated onto the specimen to prevent an electron charge from building up during electron microscopy.

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Oral Approach Avoidance

Experimental Psychology (formerly Zeitschrift für Experimentelle Psychologie) ◽

10.1027/1618-3169/a000458 ◽

2019 ◽

Vol 66 (5) ◽

pp. 355-360 ◽

Cited By ~ 1

Author(s):

Sandra Godinho ◽

Margarida V. Garrido ◽

Oleksandr V. Horchak

Keyword(s):

Native Speakers ◽

Writing System ◽

Oral Movements ◽

Motivational States ◽

Oral Approach ◽

Approach Avoidance ◽

Abstract Words ◽

European Family

Abstract. Words whose articulation resembles ingestion movements are preferred to words mimicking expectoration movements. This so-called in-out effect, suggesting that the oral movements caused by consonantal articulation automatically activate concordant motivational states, was already replicated in languages belonging to Germanic (e.g., German and English) and Italic (e.g., Portuguese) branches of the Indo-European family. However, it remains unknown whether such preference extends to the Indo-European branches whose writing system is based on the Cyrillic rather than Latin alphabet (e.g., Ukrainian), or whether it occurs in languages not belonging to the Indo-European family (e.g., Turkish). We replicated the in-out effect in two high-powered experiments ( N = 274), with Ukrainian and Turkish native speakers, further supporting an embodied explanation for this intriguing preference.

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