|Year : 2013 | Volume
| Issue : 1 | Page : 46-49
Evaluation of stability of immediately placed implants in infected sockets
Uma Shankar Pal1, Nimisha Singh1, RK Singh1, Shadab Mohammad1, Laxman R Malkunje1, Parveen Akhtar Loan2
1 Department of Oral and Maxillofacial Surgery, K. G. Medical University, Lucknow, Uttar Pradesh, India
2 Department of Oral and Maxillofacial Surgery, Government Dental College, Jammu, India
|Date of Web Publication||2-Feb-2013|
Uma Shankar Pal
Department of Oral and Maxillofacial Surgery, K.G. Medical University, Lucknow 226 003, Uttar Pradesh
Source of Support: None, Conflict of Interest: None
Purpose: To describe a protocol for the immediate placement of implant into the infected alveolar socket. Materials and Methods: In this study, a total number of 40 implants were placed immediately into the extraction sockets. Each case had a different periapical condition (acute, endodontic and periodontal infection). Great care had been taken in debridement of the socket, extraction of tooth/teeth and guided bone regeneration along with the use of pre-operative and post-operative anti-microbial agent. Results: All except three implants were osseo-integrated within 6 months to 1 year. The complications were due to the extraction procedure and bone regeneration process. Conclusion: Predisposing factors for failures are incomplete debridement of the socket, poor oral hygiene, incomplete closure of the wound, and systemic factors like hormones. From this study, we may conclude that immediate implants are a viable treatment option for patients with periapical infections.
Keywords: Alveolar socket, dental implants, periapical pathology
|How to cite this article:|
Pal US, Singh N, Singh R K, Mohammad S, Malkunje LR, Loan PA. Evaluation of stability of immediately placed implants in infected sockets. Eur J Gen Dent 2013;2:46-9
|How to cite this URL:|
Pal US, Singh N, Singh R K, Mohammad S, Malkunje LR, Loan PA. Evaluation of stability of immediately placed implants in infected sockets. Eur J Gen Dent [serial online] 2013 [cited 2019 Aug 19];2:46-9. Available from: http://www.ejgd.org/text.asp?2013/2/1/46/106809
| Introduction|| |
Immediate implants are often deferred or avoided at a site where infection is present because of the fear of failure. Recent comparative studies have concluded that similar success rates have been reported for implants placed in infected sites compared to implants placed in non-infected sites.  Studies suggest that the presence of chronic infection, periapical or periodontal, does not influence osseointegration.  The placement of immediate implants represents an alternative to compromised teeth involved with infectious conditions. Furthermore, evidence arising from the treatment of vertebral osteomyelitis in orthopedic surgery suggests that immediate implants may be a viable option. Subacute bone infection in vertebral osteomyelitis can be successfully managed by meticulous bone debridement and antibiotic therapy combined with titanium mesh cages that provide immediate support and stability for the weakened vertebrae. , Despite the preceding significant infectious state, these titanium cages were reported to achieve radiographic bone fusion, which is the orthopedic equivalent of osseointegration in implant dentistry. Alveolar ridge resorption after tooth extraction may considerably reduce the residual bone volume and compromise the favorable positioning of implants required for optimal restoration.  Following the correct clinical indications the immediate placement of the implants into the extraction sockets avoids this undesirable resorption. , Additional benefits, which are also valued by patients, are the avoidance of a second surgical intervention and the reduction in rehabilitation treatment time. Considering that immediate implants can be placed into infected sockets, this paper describes the procedure and evaluates marginal bone loss and intra-osseous stability of immediately placed implants into the infected alveolar socket.
| Materials and Methods|| |
A total of 40 implants were immediately placed in the infected socket. Informed consent and pre operative preparation was done in all the patients and a follow up of 6-12 month was recorded. The protocol we followed for immediate placement of dental implants was:
- Tab Clavum (Amoxicillin and clavulonic acid) 625 mg TDS given for 3 days before operation and next 5 days after operation
- Extraction was done with minimum trauma with the help of drill, endodontic file without any damage to the buccal cortical plates. Removal of the pathology was performed with a small size currette
- Preparation of the socket was done by sequential drilling that was extended up to 3-5 mm beyond the root apex
- After the placement of the implant residual alveolar defect was filled either with Bio-oss (xenograft) or bone harvested from the adjacent site (same site inter-radicular or buccal or lingual cortical plates)
- Platelet rich plasma (PRP) was used in all cases
- Dexamethasone was used in acute cases (doses were 16 mg i.v. stat followed by 8 mg i.v. eight hourly for 2 days)
- Defect was closed with proper suturing of the flap. In some of the cases membrane was used for guided bone regeneration, and in some cases flap was advanced for proper closure.
| Results|| |
The present study was carried out to evaluate the placement of the implants in infected alveolar socket. A total of 40 cases of immediate implantation were performed by the pre-decided treatment protocol. The implants were placed both in the maxilla and mandible. Specially designed clinical parameters were used for post implantation observations. These parameters included pain, swelling, stability, gingival status, mean probing depth, peri-implant radiolucency and marginal bone loss. The Observations were made post operatively on the 1 st day, and subsequently on the 1 st , 3 rd , 6 th and 12 th week. All implants were successfully osseointegrated except four [Figure 1], [Figure 2], [Figure 3], [Figure 4] and [Figure 5].
|Figure 2: Pre-operative orthopantomogram showing periapical pathology in realation to tooth no. 47|
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It was observed that the marginal bone loss was absent on the 1 st day and 1 st week in all patients. Bone loss was present in four patients (10%) after 3 rd , 6 th and 12 th week. Although marginal bone loss reduced with time, but this was non-significant [Table 1]. Stability was present in all the patients (100%) at the 1 st day, 1 st week and 3 rd week. After the 6 th week, mobility was observed in four patients (10%) only. There the difference in stability was non-significant with time [Table 2].
| Discussion|| |
Immediate implant placement of dental implants into fresh extraction sockets was shown to be a predictable and successful procedure when proper protocols were followed. Placement of implants in infected sites were considered a relative contraindication. Literature suggests that periapical pathology may be a cause of implant failure. ,, Thus, many surgeons hesitate in placing the implants at infected sites, and infection has become a relative contraindication for immediate implantation. With the aim to reduce the process of alveolar bone resorption and treatment time, the immediate placement of endosseous implants into extraction sockets has been propagated by some authors. , However, few clinical data is available on immediate implant placement in chronic periapical infected sites. Clinical reports have suggested that the history of periodontal or endodontic infections is a predictive marker for implant infection and failure. ,,, Thus, some authors , contraindicate the placement of immediate implants in the presence of periodontal or periapical lesions.
On the other hand, Novaes Jr. and Novaes  stated that the placement of immediate implants in chronically infected sites may not be necessarily contraindicated if appropriate clinical procedures like antibiotic administration, meticulous cleaning, and alveolar debridement are performed before implant surgical procedure. Recently, Lindeboom et al. carried out a prospective and randomized study of 50 patients aiming to evaluate the clinical success of immediate implants in periapical infected sites. The results showed a success rate of 92% for the immediate implants and 100% for the delayed implants (placed 3 months post-extraction). The authors concluded that immediate placement of single tooth implants for replacement of teeth with periapical lesions is a predictable treatment and can be indicated.
In this clinical study, we have performed the placement of immediate implant in the infected sites with the designed protocol. Consideration of preoperative antibiotics for the placement of the implant, is a vital tool for the reduction of infection.  In the cases of acute infection apart from antibiotics we have also added dexamethasone, debridement along with PRP and Bio-oss. In some cases we have also added guided bone regeneration to facilitate the healing in infected socket. This procedure is similar to the treatment of plaque induced peri-implantitis where bone regeneration is expected after removal of plaque with placement of membrane. This study suggests a favorable outcome of immediately placed implants in infected socket, if the proper protocol is followed.
The supervision of an experienced maxillofacial surgeon is utmost important (who can advice regarding the pathology and outcome). Our experience suggests that success is proportional to the adherence with the protocol, but a long-term study with bigger sample size is warranted for authentication of this protocol and procedure.
| Conclusion|| |
Immediate implants became a viable option to maintain the periodontal architecture because of their anatomic compatibility with the dental socket and the possibility of eliminating local contamination. Evidence suggests implants can be placed into sites with periapical and periodontal infections. The sites must be thoroughly debrided prior to placement. This study considered the possibility that implants could in fact be inserted into thoroughly debrided, infected extraction sockets under an appropriate antibiotic regime. All implants placed in this study, except four, were successfully osteointegrated. Marginal bone loss was reduced with time but this was non-significant. It can therefore be concluded that when utilizing the protocol outlined, implants can be placed into extraction sockets previously associated with subacute or chronic infections of periodontal and endodontic origin.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5]
[Table 1], [Table 2]