Page 62 - MDA SCATE 2024 Programme Book

ORAL PRESENTATION

ABSTRACTS

Abstract 14 Evaluation of Adaptation and Fracture Properties of Zirconia Post
Fabricated using CADCAM Technology in Restoring Root Treated Teeth
Abdul Rahim, N. F., Abdul Muttlib, N. A., Alawi, R., Abd Rahman, N., &
1
1
2
3
Ariffin, A. 1
1. Prosthodontics Unit, School of Dental Sciences, Universiti Sains
Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.
2. Conservative Unit, School of Dental Sciences, Universiti Sains Malaysia,
Health Campus, Kubang Kerian, Kelantan, Malaysia.
3. Dental Public Health Unit, School of Dental Sciences, Universiti Sains
Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.

Introduction: Root treated teeth often have extensive loss of tooth structure
which may be indicated for placement of post for retention of coronal
restoration. Different types of post have different properties and may affect
the teeth differently.
Objectives: The purpose of this study is to compare adaptation, fracture
resistance and fracture pattern of root treated teeth restored with three
different systems, namely cast metal post, zirconia post and everStick post.
Methodology: In this study, 24 premolar teeth were randomly allocated into
four groups. Group 1 and group 2 were prepared for objective 1, in which all
teeth were prepared to receive cast metal post (CMP), zirconia and everStick
posts. The samples were then submitted for adaptation evaluation using
polyvinyl siloxane (PVS). After objective 1 was achieved, Group 1 and group
2, together with group 3 and 4 were prepared to achieve objective 2 and
3. Samples in group 1 were prepared to receive zirconia post, group 2 to
receive CMP and group 3 to receive everStick post. Teeth in group 4 were
the control group where no post space preparation done. The samples were
then subjected to fracture resistance test via universal testing machine.
Finally, fracture pattern analysis was carried out.
Results: The assessment showed that there was statistically significant
difference (p<0.005) in the mean weight of the PVS material between
the groups. Group 2 (CMP) has the lightest weight, followed by group 3
(everStick) and group 1 (zirconia). Fracture resistance tests revealed that
there was statistically significant difference (p<0.005) between groups.
Group 4 (control) has the highest fracture resistance, followed by group 2
(CMP), group 1 (zirconia) and group 3 (everStick). There was no significant
difference in the fracture pattern between zirconia, CMP and everStick posts.
Conclusion: In conclusion, this study showed that zirconia post was inferior
compared to CMP in terms of adaptation and fracture resistance

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