Hubungan Antara Perawatan Teknik Begg dan Perubahan Sudut Bidang Oklusal terhadap Perubahan Jarak AO-BO



Emil Emil(1*), Prihandini Iman(2), Kuswahyuning Kuswahyuning(3)

(1) Program Studi Ortodonsia
(2) Bagian Ortodonsia Program Pendidikan Dokter Gigi Spesialis
(3) Bagian Ortodonsia Program Pendidikan Dokter Gigi Spesialis
(*) Corresponding Author

Abstract


Penelitian ini bertujuan untuk mengetahui apakah perawatan maloklusi Kelas II Divisi 1 dengan alat ortodontik
cekat teknik Begg akan mengubah jarak AO-BO menjadi mendekati normal dan apakah perubahan sudut bidang
oklusal akan mempengaruhi perubahan jarak AO-BO.
Penelitian dilakukan pada 24 pasangan sefalogram kasus maloklusi Kelas II Divisi 1 sebelum dan sesudah
perawatan. Kasus tersebut terbagi dalam 2 kelompok dengan pencabutan 4 gigi premolar satu dan pencabutan 2
gigi premolar satu rahang atas dengan jumlah sampel masing masing 18 dan 6. Pengukuran jarak AO-BO dilakukan
dan diuji dengan analisis statistik deskriptif untuk melihat persentase perubahan yang mendekati normal, menjauhi
atau tetap. Uji t test juga dilakukan untuk melihat apakah perubahan jarak AO-BO dan sudut bidang oklusal adalah
bermakna. Uji regresi dilakukan untuk melihat apakah ada pengaruh antara perubahan sudut bidang oklusal dengan
perubahan jarak AO-BO.
Hasil penelitian menunjukkan bahwa perubahan jarak AO-BO pada maloklusi Kelas II Divisi 1 yang dirawat
dengan alat cekat teknik Begg mengalami perubahan mendekati normal sebanyak 50% dari seluruh sampel dan
perubahan jarak AO-BO tersebut adalah bermakna dengan nilai p 0,007. Perubahan sudut bidang oklusal ternyata
tidak bermakna dengan nilai p 0,096. Analisis korelasi memperlihatkan tidak ada hubungan yang bermakna antara
perubahan sudut bidang oklusal dengan perubahan jarak AO-BO setelah perawatan.

ABSTRACT
The purpose of this study was to determine whether the treatment of class II Division 1 malocclusion with
Begg technique fixed appliance would normalize the distance of AO-BO and to determine whether any changes on
occlusal plane angulation would have an effect on AO-BO distance.
The study was carried out using 24 pairs of ceph of class II Division 1 malocclusion before and after treatment.
These cases were divided into two groups. One group consisted of 18 samples using extraction of 4 first premolars
and the other group consisted of 6 samples using extraction of 2 upper first premolars. The distances of AO-BO
were measured and analyzed with descriptive statistic test to determine the direction of the percentage changes
whether going towards normal, away from normal or remain the same. T tests were carried out to determine whether
the changes of AO-BO distance and occlusal plane angulation were significant. Regression analysis was used to
determine whether the changes of occlusal plane angulation had an effect on AO-BO distance.
The results of the study showed that 50% of the samples became normalize. The t-test showed that changes
were significant with p value = 0.007. The changes in the occlusal plane angulation were unsignificant with p value =
0.096. Correlation analysis showed that there were unsignificant correlation between the changes of occlusal plane
angulation and AO-BO distance after treatment.


Keywords


jarak AO-BO, bidang oklusal, maloklusi Kelas II Divisi 1, AO-BO distance, occlusal plane, class II Division 1 malocclusion

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