Implant-based overdenture: A review in patient perspective.

A review in affected person's attitude in abstract care of edentulous patients has to be a priority in elderly individuals. The development of complete dentures (CDs) has been the selection of remedy retaining in mind the socioeconomic popularity, age, and nutritional elements. However, most of the patients complain of loss of retention in mandibular implant-supported overdentures (ODs), which compensated the downside of the loss of retention in complete dentures (CDs). Moreover, implant supported over dentures (ISOVDs) supplied accurate exceptional of lifestyles, esthetics, progressed nutritional deficiencies, and provided good patient satisfaction. The place of dental implants and desire of retentive attachments for implant supported mandibular over dentures (ISOVD) are selected on clinician preference and professional opinion. This text offers a fundamental statistics regarding implant placement, mode of treatment to be selected, and patient care. Two implants provide extraordinary long-term achievement and survival with improved oral capabilities. Single midline implant OD is costly, powerful, and may be a promising alternative. In maxilla, 4-6 implants splinted with bar have located to give true results.

The account starts off evolved from 1856 when Daybook prescribed a prosthesis corresponding to an overdenture (OD). His restorations were called plates protecting fangs, but the precept turned into comparable. In 1888, EVANS[1] described a way for using roots to retain restorations. In 1896, ESSIG[2] defined a telescopic-like coping. In 1870, there is an additional proof to signify that ODs have been being emblem within the United Kingdom. In 1906, HUNTER stated whatever the motives for preserving roots, they have been normally devitalized. This sort of production, therefore, misplaced favor while the focal sepsis scare turned into at its top. In 1916, PEESO[3] employed removable telescopic crowns. Later on, the bar kind of creation was developed. This clause highlights approximately the implant-supported ODs with their benefits over other dentures.

(a-c) Normal anatomy (no tooth loss), bone begins to recede after the loss of teeth, bone loss continues without intervention

Literature Overview [Figure 1]

Tooth loss is a main problem, and the WHO described edentulism as a shape of bodily impairment, the loss of all tooth causes a disability for most people who wear conventional dentures as they may have difficulty in performing two essential tasks; eating and speaking.[4] Quality of life (QOL) is defined as an individual's perception of their position in life, in the context of the culture and value systems in which they live, and in relation to their goals, expectations, standards and concerns.[5]

We must take into consideration the QOL as a major concern to evaluate the disease impact and the treatment efficacy. QOL is measured in terms of sociodental indicators.[6] Psychologically, edentulism reduces self-belief, taboo, and the sensation of untimely aging.[7] Pathological consequences are on bone leading to resorption, which poses a quandary for prosthodontic substitute. Consequently, maintaining enamel and supplying OD preserve bone even in adjoining regions. Mericske-Stern[8] concluded that there is a higher charge of fulfillment in mandible when ODs are supported by the way of implants as opposed to teeth roots. Redford et al.[9] tested and revealed that more than 50% of the complete denture (CD) wearers have retention and stability troubles, which lead to patient pleasure, confidence, and comfort. Morais et al.[10] found that patients provided with an ISMOVD reported an increased ability to bite, eat and chew, without losing their dentures, 6 months posttreatment. In terms of biochemical modifications, serum albumin concentration increased by 1.4 mg/dl and serum B12 additionally improved.[11] Enhancement of esthetic look and facial morphology via replacement of misplaced difficult tissues may be proven simpler, if no longer more effective, with detachable OD in place of traditional fixed prosthesis, with possibly decreased costs and much less surgical intervention.

Bone Loss in Residual Ridges

Following teeth extraction, the alveolar process is reduced because of bone loss. With time, majority of people ought to depend on CDs, wherein bone loss needs to be considered [Tables 1 and 2].

Table 1

Elements for bone loss in residual ridges[12]

Table 2

Prevention of bone loss[12]

Maxillary versus Mandibular Implant-Supported Overdentures

Implant ODs in maxilla have not been as success as in mandible because the maxillary implant ODs had been made as a rescue treatment while constant prosthesis has failed. The recommended procedure is to apply four or extra implants splinted with a bar machine, it may be a success choice. A mandibular implant OD on two implants is a well-established and powerful alternative in long-term perspective.[13] Regarding retention, they are labeled into splinted and unsplinted ones, in which interconnecting bars and retentive clips are used for splinted device and lots of which include ball attachments and magnets are used or unsplinted.[14] Early loading implants at 6 or 2 weeks had been an powerful remedy and shows the same consequences as traditional loading.[13] Regarding financial system, the traditional CD is the cheapest accompanied by using implant OD, fixed supported prosthesis. To lessen the price, a remedy of mid-line implant has been attempted to hold a mandibular implant OD. While in comparison with ODs using 4 implants and 2 implants, the previous one is more costly and much less aftercare over 8 years.[15] In fact, the proportion of implant ODs to fixed implant-supported prostheses regarding implant treatments of the edentulous mandible varied from 12% in Sweden to 93% in the Netherlands.[16] In Korea, the percentage was approximately 50%. Size and curvature of mandibular arch and type of attachment are the elements which have an impact on the space between implants. Ideal length is 20–22 mm to accommodate two clips or riders. If two implants are placed near together, a quick bar cannot provide sufficient retention and stability for ODs. If Implants are placed way apart it will instantly interfere with tongue space and growing issues in fabricating the prosthesis.

Stud Attachment

Stud attachments offer reasonable retention and balance for implant ODs. Standards for stud attachment alignment include: (1) Stud attachments with each other have to be parallel, (2) should no longer intervene with the direction of insertion of OD, and (3) decide upon shorter attachments [Table 3].[17]

Table 3

Abutment choice criteria[19]

Locator Overdenture Attachment

It was designed for the ease of insertion and removal, twin retention, a low vertical profile, and a unique potential to pivot.[18]

Bar Attachments

Type IV gold is used to prefabricate bar attachments. A low-fusing solder is used to solder the prefabricated Type IV gold attachments to the abutments. Different types are castable, premilled plastic pattern, which are available in 0.2° and 4°.[22]

Complications

Wrong angulations, improper implant location, too close, too far apart, and lack of communication are due to poor treatment planning. Problems during procedure lead to poor stability, mechanical complications, mandibular fractures, and ingestion/aspiration. Anatomy-related issues pose cortical plate perforation, sinus perforation, nerve injury, and bleeding.[20]

Conclusion

It can be concluded that edentulous patients restored with implant-supported maxillary or mandibular ODs, in preference to CD with or without postpalatal seal, experience extra satisfaction with the prosthesis, have better masticatory ability, psycho-social component will be stepped forward, and the QOL (first-rate of life) of the patient will be improved. QOL in regards to oral fitness in edentulous mandible two implants’ ODs offer great long-term survival including affected person pleasure, stepped forward oral function, and oral fitness. Understanding the educational background and culture plays a pivotal position in patients’ reputation, Hence the treatment selection should be patient and dentist friendly in addition to economical maintenance.[21]

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.