Perbedaan Hasil Pengukuran Horizontal pada Tulang Mandibula dengan Radiograf Panoramik

https://doi.org/10.22146/majkedgiind.9010

Munakhir Mudjosemedi(1*), Rini Widyaningrum(2), Rellyca Sola Gracea(3)

(1) Bagian Radiologi Dentomaksilofasial, Fakultas Kedokteran Gigi, Universitas Gadjah Mada, Yogyakarta, Indonesia
(2) Bagian Radiologi Dentomaksilofasial, Fakultas Kedokteran Gigi, Universitas Gadjah Mada, Yogyakarta, Indonesia
(3) Bagian Radiologi Dentomaksilofasial, Fakultas Kedokteran Gigi, Universitas Gadjah Mada, Yogyakarta, Indonesia
(*) Corresponding Author

Abstract


Radiograf panoramik mencitrakan gigi-geligi rahang bawah dan atas beserta seluruh jaringan pendukungnya dalam sebuah citra tunggal, proses pemeriksaannya murah, cepat, dan mudah, serta paparan radiasi yang diterima oleh pasien relatif rendah. Di samping memiliki sejumlah keunggulan tersebut, radiograf panoramik juga memiliki kelemahan karena gambaran yang dihasilkan pada teknik radiografi ini mengalami distorsi geometris, sehingga hasil pencitraan pada radiografi panoramik cenderung tidak sesuai dengan ukuran struktur anatomi yang sesungguhnya pada pasien. Penelitian ini bertujuan untuk mengetahui perbedaan hasil pengukuran horizontal pada preparat mandibula dibandingkan dengan pengukuran horizontal pada citra radiograf panoramik, serta untuk mengetahui seberapa besar distorsi pengukuran
horizontal pada radiograf panoramik. Sampel penelitian berupa 56 buah preparat mandibula yang masing-masing diberi 23 buah metal marker. Radiograf panoramik diambil dari masing-masing sampel. Pengukuran horizontal pada sampel menggunakan sliding caliper digital, sedangkan pengukuran horizontal pada radiograf panoramik menggunakan
komputer. Hasil penelitian menunjukkan bahwa terdapat perbedaan rerata yang bermakna (p<0,05) antara hasil pengukuran pada radiograf panoramik dibandingkan dengan hasil pengukuran pada preparat mandibula, kecuali pada hasil pengukuran horizontal regio gigi geligi posterior dan regio median line hingga posterior korpus mandibula. Hasil penelitian ini menunjukkan bahwa pada penempatan posisi kepala pasien yang memenuhi standar akan dihasilkan radiograf panoramik dengan distorsi geometris berupa penyempitan dimensi horizontal pada regio anterior mandibula. Pengukuran horizontal pada radiograf panoramik memiliki akurasi yang baik jika dilakukan pada regio posterior, namun cenderung tidak akurat jika dilakukan secara memanjang melintasi median line.

 

Differences of Horizontal Measurement on Dry Mandibles and Panoramic Radiographs. Panoramic radiograph produces one single image of both maxillary and mandibular dental arches and their supporting structures. This technique is cheap, fast and easy, with relatively low radiation exposure received by patients. However, the panoramic radiograph also has some disadvantages related to its geometric distortion. The images of patient’s anatomical structures
on panoramic radiograph are not equal with their actual dimension. The aim of this study is to determine the distortion of panoramic radiograph, by comparing the horizontal measurements on panoramic radiographs with those on the real object, which was the dry mandibles. The samples of this study were 56 dry mandibles with 23 metal markers on each of
them. Panoramic radiograph was taken from each sample. Horizontal measurements on dry mandibles were done using digital sliding caliper, while horizontal measurements on panoramic radiograph were done using computer. The result of this study shows that there were significant differences (p<0.05) between horizontal measurements on panoramic
radiographs compared with the measurements on dry mandibles, except in posterior dental arch and median line up toposterior region of mandible corpus. The results of this study indicate that panoramic radiograph taken on standardized patient’s head positioning procedure would produce geometric distortion that tends to be narrow on mandibular anterior region. The horizontal measurements of panoramic radiographs show good accuracy in posterior region, but tend to be inaccurate if done extended across the midline.


Keywords


preparat mandibula; radiograf panoramik; pengukuran horizontal; dry mandible; panoramic radiograph; horizontal measurement

Full Text:

PDF


References

Gkoumas S, Wang Z, Abis M, Arboleda C, Tudosie G, Donath T, Brönnimann C, Schulze-Briese C, Stampanoni M. Grating-based

interferometry and hybrid photon counting detectors: Towards a new era in X-ray medical imaging. Nucl Instrum Methods. 2015, http://dx.doi.org/10.1016/j.nima.2015.08.017i

Sher-Lin C. A note on digital dental radiography in forensic odontology. J Forensic Dent Sci. 2014; 6(3): 197–201.

Priminiarti M, Kiswanjaya B, Iskandar HB. Radiographic Evaluation of Osteopororsis through detection of jaw bone changes: a simplified early osteoporosis detection effort. Makara Kesehatan. 2010; 14(2): 51-6.

Ludlow JB and Mol A. Digital Imaging. dalam Oral Radiologi Principles and Interpretations. 7th ed. Toronto: Mosby; 2014. H.41.

Gahleitner A, Watzek G, Imhof H. Dental CT: imaging technique, anatomy, and pathologic conditions of the jaws. Eur Radiol. 2003;

:366-76.

Amir C, Asja C, Melita VP, Adnan C, Vjekoslav J, Muretic I. Evaluation of the precision of dimensional measurement of the mandible on panoramic radiographs. Oral Surg Oral Med

Oral Pathol Oral Radiol Endod.1998; 86: 242-8.

Langlois CdO, Sampaio MCC, Silvia AER, da Costa NP, Rockenbach MIB. Accuracy of liniar measurement before and after digitizing periapikal and panoramic radiography images. Braz Dent J. 2011; 22(5): 404-9.

Mallya SM and Lurie AG. Panoramic Imaging. dalam Oral Radiology Principles and Interpretations. 7th ed. Toronto: Mosby; 2014. H.166.

Whaites E and Drage N. Essentials of Dental Radiography and Radiology. 5th ed. Churchill Livingstone Elsevier; 2013. H.175-176.

Nishikawa K, Suehiro A, Sekine H, Kousuge Y, Wakoh M, Sano T. Is linear distance measuredby panoramic radiography reliable?

Oral Radiol. 2010; 26:16-9.

Ong RGK, Stevenson MR. Evaluation of bone density in the mandibles of young Australian adult of Mongoloid and Caucasoid descent. Dentomaxillofac Radiol. 1999; 28:20-5.

Taguchi A. Panoramic radiographs for identifying individuals with undetected osteoporosis. Jpn Dent Sci Rev. 2009; 45:109-20.

Watanabe PCA, Farmer A, Watanabe MGC, Issa JPM. Radiographic signal detection of systemic disease: Orthopantomographic radiography. Int J Morphol. 2008; 26(4): 915-26.

Park T, Choi H. Implant Radiology in Dental Practice. Oral Radiol. 2001; 17:1

Pittayapat P, Galiti D, Huang Y, Dreesen K, Scheurs M, Couto Sauza P, Rubira-Bullen IRF, Westphalen FH, Pauwels R, Kalema G,

Willems G, Jacobs R. An in vitro comparison of subjective image quality of panoramic views acquired via 2D or 3D imaging. Clin Oral

Invest. Verlag: Springer; 2012.

Murti, B. 2011. Validitas dan Reabilitas Pengukuran. Matrikulasi Program Studi Doktoral, Fakultas Kedokteran, UNS.

Hallgren KA. Computing Inter-Rater Reability for Observational Data: An Overview and Tutorial. Tutor Quant Meth for Psych. 2012;

(1): 23-34.

Farman AG. Panoramic Radiology, Seminars on Maxillofacial Imaging and Interpretation. New York: Springer; 2007.



DOI: https://doi.org/10.22146/majkedgiind.9010

Article Metrics

Abstract views : 1982 | views : 4123

Refbacks

  • There are currently no refbacks.




Copyright (c) 2016 Majalah Kedokteran Gigi Indonesia




Currently, Majalah Kedokteran Gigi Indonesia indexed by:

         

 

 

 

 

 

 View My Stats


real
time web analytics