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Abstrak :
ABSTRAK
Latar Belakang : Lesi periapikal adalah lesi yang melibatkan area apikal gigi. Lesi periapikal merupakan proses tingkat lanjut dari karies yang bervariasi pada kelompok rahang, elemen gigi, dan ukuran lesi. Selain itu, faktor sosiodemografi seperti jenis kelamin juga dapat mempengaruhi proses terjadinya lesi periapikal Tujuan : Penelitian ini bertujuan untuk mengetahui frekuensi dan distribusi lesi periapikal di RSGM Paviliun Khusus FKG UI periode Januari 2007 – September 2014 Metode : Penelitian ini berjenis observasi deskriptif dan merupakan studi retrospektif menggunakan data sekunder berupa gambaran radiografis yang terkomputerisasi dengan baik pada RSGMP Paviliun Khusus FKG UI periode Januari 2007 – September 2014. Hasil : Didapatkan 425 kasus lesi periapikal. Frekuensi dan distribusi dipaparkan melalui tabel dan diagram. Kesimpulan : Frekuensi dan Distribusi lesi periapikal paling sering melibatkan gigi 4.6, lokasi terjadinya lesi periapikal paling sering terjadi pada rahang bawah posterior, kelompok ukuran lesi yang paling sering terjadi adalah lesi periapikal dengan ukuran 6-10 mm (49.18%), dan berdasarkan jenis kelamin, perempuan lebih sering terlibat dengan perbandingan antara laki-laki dan perempuan 1:1:32.

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ABSTRACT
Background : Periapical lesion is a lesion which involving the apical area of the tooth. Periapical lesion is an advanced process of caries which various in the group of the jaw, tooth element, and the size of the lesion. In addition, sex may also affect the occurrence of periapical lesion. Objective : This research aimed to determine the frequency and distribution of lesion in RSGM Paviliun Khusus FKG UI period of January 2007 - September 2014. Methods : The type of this study is descriptive observation, and a retrospective study by using secondary data from the computerized radiographic picture in RSGM Paviliun Khusus FKG UI period of January 2007 - September 2014. Result : There are 425 cases of periapical lesion. Frequency and distribution presented through tables and diagrams. Conclusion : Frequency and distribution of periapical lesion is most commonly involve tooth 4.6, the location of periapical lesion is most commonly happen on the posterior mandible region, the group of the lesion size which commonly happen is 6-10 mm, and based on sex, women are more frequently that involved with the comparison between men and women 1: 1.32.

Abstrak :
Latar Belakang: Selama preparasi kemomekanis, umumnya terjadi ekstrusi debri ke periapeks yang dapat memicu respon inflamasi dan memperlambat penyembuhan jaringan periapeks. ProTaper® dilaporkan menyebabkan banyak esktrusi debri, dan belum ada data mengenai ekstrusi debri oleh generasi barunya, ProTaper Next® Tujuan: Menganalisis jumlah ekstrusi debri pada gigi yang dipreparasi dengan ProTaper® dan ProTaper Next®. Metode: Enam puluh gigi premolar dibagi dalam dua kelompok (kelompok ProTaper® dan ProTaper Next®) sama besar. Ekstrusi debri pada preparasi ditampung dalam tabung, dan perbedaan berat tabung sebelum preparasi dan sesudah preparasi merupakan jumlah debri terekstrusi Hasil: kelompok ProTaper® menghasilkan debri lebih banyak daripada kelompok ProTaper Next®. Secara statistik (t-test) perbedaanya bermakna (p<0,005). Kesimpulan: jumlah debri pada preparasi dengan ProTaper Next® lebih sedikit daripada pada preparasi dengan ProTaper. ......Background: debris extrusion during chemomechanical preparation could trigger inflammatory response and delay periapical healing. Instrumentation with ProTaper® is reported to cause significant debris extrusion, while no data available with ProTaper Next®. Objective: to analyze the amount of debris extruded in instrumentation with ProTaper® and ProTaper Next®. Methods: sixty premolars were divided evenly into two groups; the first group was instrumented with ProTaper® and the other one with ProTaper Next®. Debris ekstruded during instrumentation was collected in a bottle and the difference between the weight of the bottle before and after intrumentation was considered as the amount of debris extrusion. Results: debris extrusion by instrumentation with ProTaper® was greater than instrumentation with ProTaper Next®, and statistically significant (t-test, p<0,005). Conclusion: the amount of debris extrusion produced by ProTaper Next® was less than produced by ProTaper®

Abstrak :
Alat elektronik pengukur panjang kerja multifrekuensi adalah alat mutakhir yang datang setelah alat elektronik dua frekuensi. Tujuan Penelitian: Membandingkan ketepatan hasil pengukuran panjang kerja dua sistem alat elektronik tersebut dan radiografik terhadap panjang kerja aktual. Metode: Empat puluh gigi anterior rahang atas atau rahang bawah dipotong pada daerah servikal gigi. Dari arah labial, gigi dironsen untuk mengukur panjang kerja radiografik. Kemudian Semua gigi diukur dengan alat elektronik dua frekuensi dan multifrekuensi. Kemudian gigi dibelah dua vertikal dan diukur panjang aktual gigi. Kemudian data dianalisis dengan uji statistik chi-square dan kolmogorov-smirnov. Hasil: Alat elektronik pengukur panjang kerja mempunyai ketepatan lebih baik dari radiografik dengan hasil berbeda bermakna. Kesimpulan: Alat elektronik memiliki ketepatan lebih baik dari radiografik.

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Multifrequency Electronic root canal length measurement device is the one that comes after two frequencies based device. Objective: To compare the accuracy of the two electronic root canal length measurement device and radiographic with the actual working length. Methods: Forty maxillary or mandibular anterior extracted teeth were sectioned at the cervical area. All samples were exposed with x-ray to measure radiographic working length. All samples then were measured with two frequencies and multifrequency electronic root canal length measurement device. To confirm the actual length of the teeth all samples were sectioned vertically. Then the data were analyzed by chi-square statistical test and the Kolmogorov-Smirnov. Results: Electronic root canal length measurement devices accuracy are better than radiographic with significantly different results. Conclusion: Electronic device has an accuracy of better than radiographic.