The relationship between bad habits of thumb sucking and the incidence of Dewey type Klas I malocclusion in students aged 9-12 years at Tamalanrea Public Elementary School Makassar: Hubungan kebiasaan buruk mengisap jempol dengan kejadian maloklusi tipe Dewey Klas I pada murid usia 9-12 tahun di Sekolah Dasar Negeri Tamalanrea Makassar

Ummul Khaer Said (Student at Clinical Stage, Faculty of Dentistry, Hasanuddin University Makassar, Indonesia)
Muhammad Harun Achmad (Department of Pediatric Dental Health Faculty of Dentistry, Hasanuddin University Makassar, Indonesia)

MDJ (Makassar Dental Journal)
Vol. 13 No. 2 (2024): Volume 13 Issue 2 Agustus 2024

Bad habits thumb sucking over a long period of time causes malocclusion and dentofacial abnormalities. The aim of this research is to find out how bad habits are related thumb sucking with class I malocclusion type dewey in students aged 9-12 years at SDN Tamalanrea Makassar. This descriptive analytical observational research with a cross sectional design uses a simple random sampling technique. The data is analysed with chi square analysis. The results of this research were 76 respondents who expe-rienced malocclusion. The most dominant malocclusion is class I type 2, protrusive (46.1%). The lowest malocclusion is class I type 4 crossbite posterior (9.2%). Based on statistical tests, the value of p=0.004 (p <0.05) was obtained, which means that there is a relationship between bad habits and the incidence of malocclusion. It is concluded that there is a relationship between bad habits and the incidence of malocclusion in students aged 9-12 years at SDN Tamalanrea Makassar.