Long-Term Prosthetic Aftercare of Two- vs. Four-Ball Attachment Implant-Supported Mandibular Overdentures (original) (raw)
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Aim: the aim of this study was to describe a technique of fabrication of two implants supported mandibular overdenture. Background: There are several treatment modalities for completely edentulous patients including conventional complete dentures, implants supported overdentures and implant supported fixed prosthesis. Patients with a severely resorbed mandible often experience problems with their conventional complete dentures. Treatment concepts involving implant supported overdentures have proven to be as satisfactory as implant supported fixed prosthesis with added advantage of ease in hygiene maintenance and less cost. Case description: This clinical report summarizes a simplified and accurate method of fabricating a two implant supported mandibular overdenture. In this case two implants were placed in the intercannine region of mandibular ridge and conventional complete denture was installed. Three months later this complete denture was converted into implant supported mandibular overdenture. Clinical significance: Conventional complete dentures have shown less satisfaction rates by patients over a period of time in terms of function. Moreover, there are researches showing increased rate of resorption with these dentures. Thus, if implant supported overdentures are used routinely into they can provide a better quality of life to edentulous patients.
Oral Health and Dental science, 2019
Background: The number and location of dental implants for implant overdenture therapy are varied and deemed arbitrary. Yet, less favorable prosthetic outcomes are reported more often. Purpose: the purpose of the current study was to evaluate the influence of implant number and location on the retention and chewing efficiency of implant supported mandibular overdenture using ball attachment. Materials and Methods: Fifteen completely edentulous male participants, with a mean age 55-year, were involved in this within-patient study. All patients received a new set of conventional complete dentures before implant positioning. Three implants were placed in the midline and first premolar areas in the mandible, using a stereolithographic template. After healing period, the conventional dentures were converted into implant supported overdentures attached, with ball attachments, to single (group I), two (group II) and three implants (group III) respectively. Retention was evaluated immediately after overdenture delivery (T0) and 1 month later (T1) by forcemeter. Masticatory efficiency was also assessed one month after denture insertion (T1) by two-colored chewing gum. Unmixed Fraction (UF) was then computed. Results: The highest retention values were revealed in group III followed by group II and group I respectively for both observation times. Much higher values were elaborated after one month of dentures delivery (T1) compared to (T0). Masticatory efficiency values showed a statistically significance difference between group (II) and group (I) after 5, 10 and 20 strokes (P<0.001).Whereas, no statistically significant difference between the two groups was shown after 30 and 50 strokes (P>0.05). A statistically significance difference between group III and group I was noticed after 5,10,20,30 and 50 strokes (P<0.001). Nonetheless, masticatory efficiency values exhibited no significant differences between Group II and Group III (P>0.05). Conclusion: Within the limitations of this short-term clinical study, edentulusim treated by 3-implant overdentures has appropriate promising outcomes. Based on this study finding, a triangular design of overdeture is a reliable option for maximizing both retention and chewing efficiency when compared to single implant or 2-implant mandibular supported overdentures.
Clinical Efficacy of Single One Piece Implant Retained Mandibular Overdentures
The retention and stability of dental prostheses can be dramatically increased with the use of dental implants and subsequently oral functions of the edentulous patients can be greatly improved. This study was conducted to evaluate the clinical efficacy of single one-piece implant-retained mandibular overdentures compared with conventional complete dentures. Twelve edentulous subjects (mean age: 64) with moderate to severely resorbed mandibular ridges were treated with conventional complete dentures. The clinical efficacy in terms of retention, stability, tissue scores, satisfaction level and masticatory capacity was assessed after 6 weeks. After data collection, single one-piece ball type implant was placed at the mandibular midline area of each subject. After 6 weeks of implant placement conventional mandibular complete dentures were modified into implant-retained mandibular overdentures by O-ring attachment. Clinical efficacy was assessed at 1 week, 3 months and 6 months after lo...
Egyptian Dental Journal
Prosthetic rehabilitation of totally edentulous patients today is a common procedure that clinicians approach in their daily practice. The use of dental implants for replacing missing teeth proved to be a safe technique and the implant-prosthetic materials available give the possibility of having long-term clinical success 1,2. Many studies have recommended the mandibular implant overdenture as a reliable treatment modality for edentulous patients and, in particular, those who have persistent problems using conventional
Implant Dentistry, 2007
Introduction: the aim of this study was to clinically and radiographically evaluate 54 implant-supported mandibular overdentures under the protocol of immediate loading, using a retention system with ball attachments. This evaluation was performed within 36 months of function of the implants. Methods: observational descriptive study in 27 fully edentulous patients who were evaluated in a 36-months followup period, after having two internal connection implants placed in the interforaminal area of the lower maxilla. The implants were evaluated in terms of survival rate, amount of peri-implant bone loss, condition of peri-implant tissues, prosthesis behavior, and degree of patient satisfaction. Results: survival rate at 36 months was 98.1% and the average radiographic bone loss was 0.45 mm (SD 0.6); there was a low level of plaque and average probing depth was 1.75 ± 0.75 mm. 57% of prosthesis showed active retention. 43% did not show retention or it was provided by one of its elements. 53.8% of overdentures were stable. A high percentage of patients showed total satisfaction. Conclusion: in a 36-months follow-up, a mandibular overdenture with ball attachments placed on two non-splinted implants immediately loaded is a predictable treatment in patients with fully edentulous lower maxilla, with high implant survival rates, low levels of periimplant bone loss, and a high degree of patient satisfaction.
Journal of Oral Implantology, 2011
The aim of this clinical study was to evaluate the prosthodontic maintenance requirements during the first year of service of mandibular overdentures supported by interforaminal implants and to assess the influence of attachment type, implant number, and bite force on these requirements. Fifty-nine patients treated with mandibular implant overdentures between the years 2004 and 2009 and appearing in the 12th-month recall were included in this study. The overdentures constituted 4 groups: 2 single interforaminal implants (1 group with locator and 1 group with ball attachments), 3 single interforaminal implants, 3 splinted interforaminal implants (bar), and 4 splinted interforaminal implants (bar). During the examination, prosthetic parameters such as occlusion, tissue adaptation, condition of the retentive mechanism (matrice and patrice), and the condition of the denture-bearing tissues were evaluated and recorded. No statistically significant relation was found between attachment ty...