Effect of the Degree of Palatal Coverage on the Crestal Bone Height of Implant Retained Maxillary Overdenture
Magda Hassan Mohammed Hassan;
Abstract
In this study fourteen patients were selected from the out-patient clinic of Prosthodontic Department, Faculty of Dentistry, Ain Shams University to compare radiographically the effect of complete palatal coverage and partial palatal coverage in marginal bone height around maxillary hybrid -implants.
The selected patients were having maxillary conventional complete dentures and mandibular implant supported overdenture.
The selected patients were free from systemic diseases, temporomandibular joint disorders and with no history of para-functional habits. The patients were subjected to thorough examination to detect any abnormalities in ridge, mucosa or temporomandibular joint.
Four 3 mm diameter, 12 mm length, one piece implants were installed in maxillary arch of each patient in areas of lateral incisors and first premolars to retain maxillary implant overdenture.
The patients were equally divided into two groups:
Group I: includes seven patients received full palatal coverage maxillary implant retained overdenture opposed by mandibular implant retained overdenture.
Group II: includes seven patients received partial palatal coverage maxillary implant retained overdenture opposed by mandibular implant retained overdenture.
O-ring attachments' were used to retain the upper denture to the implants for all the patients in the two groups.
Measurements of changes in crestal bone height were made at time of denture loading, 6 and 12 months after loading. Radiographic evaluation using cone beam radiography was followed.
The results were recorded, collected, tabulated and statistically analyzed.
Marginal bone height loss was significantly higher in patients with partial palatal coverage compared to patient with complete palatal coverage.
From this study it was observed that:
Marginal bone height loss was statistically significant between the two groups all over the study period.
Marginal bone height loss was higher around the last implant in both groups during the follow up period.
The selected patients were having maxillary conventional complete dentures and mandibular implant supported overdenture.
The selected patients were free from systemic diseases, temporomandibular joint disorders and with no history of para-functional habits. The patients were subjected to thorough examination to detect any abnormalities in ridge, mucosa or temporomandibular joint.
Four 3 mm diameter, 12 mm length, one piece implants were installed in maxillary arch of each patient in areas of lateral incisors and first premolars to retain maxillary implant overdenture.
The patients were equally divided into two groups:
Group I: includes seven patients received full palatal coverage maxillary implant retained overdenture opposed by mandibular implant retained overdenture.
Group II: includes seven patients received partial palatal coverage maxillary implant retained overdenture opposed by mandibular implant retained overdenture.
O-ring attachments' were used to retain the upper denture to the implants for all the patients in the two groups.
Measurements of changes in crestal bone height were made at time of denture loading, 6 and 12 months after loading. Radiographic evaluation using cone beam radiography was followed.
The results were recorded, collected, tabulated and statistically analyzed.
Marginal bone height loss was significantly higher in patients with partial palatal coverage compared to patient with complete palatal coverage.
From this study it was observed that:
Marginal bone height loss was statistically significant between the two groups all over the study period.
Marginal bone height loss was higher around the last implant in both groups during the follow up period.
Other data
| Title | Effect of the Degree of Palatal Coverage on the Crestal Bone Height of Implant Retained Maxillary Overdenture | Other Titles | تأثير درجة تغطية سقف الحلق على الحافة العظمية المحيطة بالغرسات السنية الداعمه للأطقم الكاملة العلوية المحمولة | Authors | Magda Hassan Mohammed Hassan | Issue Date | 2016 |
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