Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan
Purpose: This study aimed to investigate various methods of gonial angle measurements and to determine the association between gonial angle and residual bone resorption in edentulous patients provided with implants overdenture. Materials and method: 23 patients wearing maxillary complete dentures...
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| Format: | Thesis |
| Published: |
2019
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| Subjects: | |
| Online Access: | http://studentsrepo.um.edu.my/11525/ http://studentsrepo.um.edu.my/11525/4/ranganayakidevi.pdf |
| _version_ | 1848774408046379008 |
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| author | Pl. Ranganayakidevi, S. Palaniappan |
| author_facet | Pl. Ranganayakidevi, S. Palaniappan |
| author_sort | Pl. Ranganayakidevi, S. Palaniappan |
| building | UM Research Repository |
| collection | Online Access |
| description | Purpose: This study aimed to investigate various methods of gonial angle
measurements and to determine the association between gonial angle and residual bone
resorption in edentulous patients provided with implants overdenture.
Materials and method: 23 patients wearing maxillary complete dentures opposing
mandibular implant overdenture prosthesis were recruited. The posterior ridge
resorption was measured using the proportional area index method, whereby the
dentopantomograph (DPT) of pre- and 4 years post- implant placement of these patients
were compared. Mandibular gonial angle measurements were done on 5 out of the 23
patients using four measurement methods: (i) Two different vertical line tracing points
on DPT (exterior border points and mid-condylar points), (ii) Manual measurement on
3D printed mandibular model using goniometer, (iii) Lateral cephalometric view of
CBCT using Mimics software. The results from each measurement methods were then
compared.
Results: The results showed a strong association between CBCT measurements and
both DPT measurement methods (R2 = 0.927, 0.829), but weak association between
CBCT and to the manual measurement on the 3D printed models (R2 = 0.098).
However, the associations were not significant (p>0.05). The mean (SD) for the
exterior border points method was 128.76⁰ (7.82), while for the mid-condyle points
method was 130.89⁰ (7.06) however, the difference was not significant (p = 0.185). The
posterior ridge resorption in implant overdenture patients showed no correlation with
gonial angle (r < 0.3, p>0.05) as measured on DPT images.
v
Conclusion: No significant difference between the different gonial angle
measurement methods was observed in this study. No correlation between the
mandibular gonial angle and posterior mandibular bone resorption was found.
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| first_indexed | 2025-11-14T13:57:49Z |
| format | Thesis |
| id | um-11525 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T13:57:49Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-115252022-01-03T23:04:00Z Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan Pl. Ranganayakidevi, S. Palaniappan RK Dentistry Purpose: This study aimed to investigate various methods of gonial angle measurements and to determine the association between gonial angle and residual bone resorption in edentulous patients provided with implants overdenture. Materials and method: 23 patients wearing maxillary complete dentures opposing mandibular implant overdenture prosthesis were recruited. The posterior ridge resorption was measured using the proportional area index method, whereby the dentopantomograph (DPT) of pre- and 4 years post- implant placement of these patients were compared. Mandibular gonial angle measurements were done on 5 out of the 23 patients using four measurement methods: (i) Two different vertical line tracing points on DPT (exterior border points and mid-condylar points), (ii) Manual measurement on 3D printed mandibular model using goniometer, (iii) Lateral cephalometric view of CBCT using Mimics software. The results from each measurement methods were then compared. Results: The results showed a strong association between CBCT measurements and both DPT measurement methods (R2 = 0.927, 0.829), but weak association between CBCT and to the manual measurement on the 3D printed models (R2 = 0.098). However, the associations were not significant (p>0.05). The mean (SD) for the exterior border points method was 128.76⁰ (7.82), while for the mid-condyle points method was 130.89⁰ (7.06) however, the difference was not significant (p = 0.185). The posterior ridge resorption in implant overdenture patients showed no correlation with gonial angle (r < 0.3, p>0.05) as measured on DPT images. v Conclusion: No significant difference between the different gonial angle measurement methods was observed in this study. No correlation between the mandibular gonial angle and posterior mandibular bone resorption was found. 2019 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/11525/4/ranganayakidevi.pdf Pl. Ranganayakidevi, S. Palaniappan (2019) Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan. Masters thesis, Universiti Malaya. http://studentsrepo.um.edu.my/11525/ |
| spellingShingle | RK Dentistry Pl. Ranganayakidevi, S. Palaniappan Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan |
| title | Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan |
| title_full | Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan |
| title_fullStr | Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan |
| title_full_unstemmed | Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan |
| title_short | Gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / Pl. Ranganayakidevi S. Palaniappan |
| title_sort | gonial angle and its association with mandibular residual ridge resorption in implant-overdenture patients / pl. ranganayakidevi s. palaniappan |
| topic | RK Dentistry |
| url | http://studentsrepo.um.edu.my/11525/ http://studentsrepo.um.edu.my/11525/4/ranganayakidevi.pdf |