Immediate Placement and Implant Loading For Expedited Patient Care: A Patient Report

The International Journal of Oral & Maxillofacial Implants

Volume 17, Number 4, 2002

Thomas J. Balshi, DDS/Glenn J. Wolfinger, DMD

Introduction

Complete edentulism is usually a slowly developing condition that occurs as a result of dental neglect, although there are some instances when trauma or systemic disease may contribute to the creation of the same condition. Regardless of the etiology, the dentally debilitated patient generally experiences deficiencies in the physiologic functions of speech, deglutition and mastication.

A major reason for patient procrastination in seeing a dentist is because of their psychologic impairment related to dental care. Fear of dental treatment can stem from previous negative dental experiences, an innate or socially engendered fear of professional care, or even personal embarrassment for allowing the condition to proceed to its current state. Economic considerations may also play a role in inhibiting patients from proceeding with, and enjoying the benefits of dental care. Lastly, physical access or proximity to the appropriate level of professional care prevents some from taking advantage of innovative multidisciplinary approaches to modern dentistry.

Oral debilitation, even when a substantial number of natural teeth remain, is difficult to manage. Periodontally hopeless teeth cannot serve as functional abutments for either fixed or removable prostheses. As natural teeth are lost and the patient becomes edentulous, conventional complete dentures are a common treatment option. Despite strict adherence to accepted denture fabrication techniques, complete denture wearers generally continue to experience deterioration of the supporting alveolar bone .

An alternative to the complete removable denture is the use of endosseous implants as support for a fixed prosthesis. The use of dental implants has become an increasingly popular and predictable method of providing prosthesis support, retention and stability. Brånemark and colleagues proposed the concept of osseointegration over 37 years ago, but total acceptance of implant based therapy has been hampered by the cost of treatment and limited access to professional care. Their initial clinical report focused on completely edentulous patients in 1969 . Since the early studies, dental implants have been used to treat partial edentulism , single tooth replacement , and overdenture applications .

As experience has been accumulated with osseointegrated implants and long term success rates realized, implant designs, surface characteristics and loading protocols have evolved in an effort to reduce treatment time and cost.

The following history and treatment is typical of that provided for patients using the immediate functional loading concept in the edentulous mandible.

History

Pre-treatment patient communication determined that this 30-year-old female patient was in excellent systemic health with previous hospitalizations only for the birth of four children. Cigarette smoking of half pack per day and the social use of alcohol were reported. The patient's oral debilitation resulted from an intense fear of dentistry brought on by a frightening and demoralizing dental experience 12 years earlier. Financial resources and access to comprehensive dental care locally available were limited.

Approximately 12 years prior to presentation, the patient experienced traumatic avulsion of the maxillary anterior teeth and several other teeth were luxated in this accident. Dental rehabilitation following the loss of teeth was ineffective because of the patient's inability to successfully use the removable partial denture that was fabricated at that time.

Prior to evaluation of the patient, a series of written and verbal communications were established between the patient and the prosthodontic caregivers. These communications revealed a state of advanced periodontal disease, loose and malpositioned teeth, extremely painful function and associated pathology. One of the most challenging aspects of treatment was to overcome the patient's psychologic fear so as to begin clinical procedures.

Clinical evaluation and diagnosis

The patient had a late afternoon arrival for clinical evaluation and review of medical history. She appeared to be in physical and emotional distress and described severe pain from her dentition which was exacerbated by occlusal contact (Fig 1a). Examination revealed missing teeth in the maxilla and mandible, advanced loss of supporting bone and generalized tooth mobility (Fig 1b). A panoramic radiograph (Fig 1c) was obtained immediately upon arrival, but intraoral periapical radiographs were extremely difficult to acquire because of the patient's painful condition and reluctance to have instrumentation touch her loose and infected dentition.

The patient suffered from severe dental phobia. Dental diagnoses included periapical pathosis, tooth mobility, advanced periodontitis, partial edentulism, posterior occlusal collapse, carious lesions and foul mouth odor. A tentative treatment plan was developed and reviewed in detail with the patient. It involved the removal of all remaining teeth under general anesthesia, the immediate placement of five endosseous implants in the anterior mandible, one in the left posterior and two in the right posterior mandible, followed by the fabrication of an acrylic resin conversion prosthesis for immediate placement and a conventional maxillary complete denture.

Comprehensive informed consents for extraction of the remaining teeth and implant placement, as well as administration of general anesthesia, were reviewed and discussed with the patient. All evaluation, diagnostic and treatment planning decisions were completed during the day of initial presentation to the treatment office.

Clinical treatment

On-premises dental laboratory technicians fabricated overnight the custom designed acrylic resin immediate dentures for both the maxilla and mandible from the initial impressions and jaw records obtained at the initial appointment.

General anesthesia was administered using nasal intubation. Local anesthesia was accomplished with a combination of Bupivacaine hydrochloride (Marcaine 0.5%: Cook-Waite, Abbott Laboratories, North Chicago IL) and lidocaine hydrochloride (Lignospan Forte. Septodont, Inc., New Castle DE USA) which also provided additional hemostasis at the surgical site. All remaining teeth were removed; granulation tissue was thoroughly debrided from the alveolus.

In the maxillary arch minor alveoloplasty was performed to remove sharp bony projections and provide an acceptable ridge configuration for placement of the immediate maxillary removable denture. Mucosal tissues were then sutured (Vicryl sutures by Ethicon: Johnson & Johnson, Somerville NJ USA) to achieve primary closure.

In the mandibular arch a more aggressive alveoloplasty was performed to reduce the height of the anterior mandible to the level of the incisor apices. This radical alveoloplasty assured total clinical debridement of tooth socket soft tissue from the bone. Eight Brånemark System implants (Nobel Biocare USA, Yorba Linda CA) were placed: five 18 mm X 3.75 mm in the anterior mandible and three 10 mm X 4 mm implants, two in the right posterior and one in the left posterior. The bone quality at the time of implant placement was determined clinically by the surgeon to be quality 2 according to the classification established by Lekholm and Zarb . A tap was used to prepare threads in the osteotomy sites prior to implant placement. Immediately following implant placement, a combination of Brånemark System abutments were securely fastened: two 3 mm EsthetiCone abutments were used in the positions of the mandibular left canine and right first molar, while 3 mm and 4 mm standard abutments were used for the remaining implants (Fig 2).

Immediately following abutment placement, vicryl sutures were used to obtain primary closure with secure adaptation of the mucosa around the titanium abutments. Modified stainless steel impression copings (Nobel Biocare USA, Yorba Linda CA), were then placed on the abutments with 10 mm guidepins. The wire reinforced complete mandibular immediate denture was relieved lingually (Fig 3a,b) to permit its placement and maxilla mandibular jaw relation records could be obtained without contacting the prosthetic cylinders or screws. A rubber dam (Hygenic by Coltene/Whaledent Inc. Mahwah, NJ) was then placed over the surgically closed mucosal tissue to protect it from the autopolymerizing acrylic resin (Jet Acrylic: Lang Dental Mfgr. Co. Wheeling IL) used to connect the prosthetic cylinders to the complete mandibular denture using the conversion prosthesis protocol. Once polymerization of the resin was complete, the guidepins were removed from the prosthesis. The prosthesis was then taken from the operating room to the laboratory to be structurally enhanced, refined and polished.

While the laboratory modifications were performed, a master impression was made at the level of the abutments using fast setting impression plaster (Kerr Manufacturing Co., Romulus MI). A master cast with metal analogues of the abutments was fabricated and prepared for articulation. At the same time a stone cast of the maxillary prosthesis was also prepared for articulation.

When the acrylic resin temporary implant supported prosthesis was refined and disinfected, it was returned to the operatory and fastened on the mandibular implants with gold screws for occlusal adjustment. An interocclusal registration was made and the prosthesis was once again removed from the patient's mouth and was then attached to the master cast and articulated to the maxillary denture cast. Following articulation, the acrylic resin temporary implant supported prosthesis was seated in the patient and the screw access holes sealed with a cotton pellet and Fermit (Ivoclar, Amherst NY). Extubation of the nasal tracheal tube occurred with the cessation of general anesthesia, approximately four hours after the initiation of treatment.

The patient was monitored in recovery for an hour after the procedure, at which time she was permitted to walk about the clinical facility (Fig 4). Appropriate medications were prescribed for follow-up, including the use of post-treatment antibiotics (Penicillin 500 mg, 1 tablet four times a day for 10 days) and analgesics as needed. The patient returned home the next morning and daily follow-up communication was carried on for two weeks. Four months following extractions and implant placement, the patient returned for a one-hour visit to change the prostheses. At that visit, a definitive gold and acrylic resin custom designed fixed mandibular tissue integrated prosthesis and a new maxillary denture were placed (Fig 5 a, b, c). Oral hygiene instructions and sufficient quantities of oral hygiene supplies were provided to the patient.

Discussion

Total natural dentition failure leading to a condition of an oral invalid can emanate from multiple dental pathologies leading to a collapse of occlusal vertical dimension and an accelerated aged appearance of the lower third of the face. One of the major reasons patients neglect having dental treatment to the point of becoming edentulous, is the fear of dentistry, fear of the dentist, and fear in general of the entire dental experience. The patient must be made to feel comfortable with the dental office from the first moment of contact with reception personnel, the dental assistants and technicians, and the dentist, creating a positive dental experience on which trust is built. Another reason that patients may neglect or begin treatment and not return to complete it, is the lack of access to treatment without traveling long distances for multiple dental appointments.

This article describes the expedited clinical and laboratory procedures involved in the treatment for a patient affected by such circumstances. Even for patients who express no anxiety about dental treatment, the described protocol offers an effective treatment option to impending tooth loss or a long standing struggle with ill fitting, uncomfortable or unsightly removable prostheses. It relies heavily on coordinated surgical and restorative treatment provided by an experienced prosthodontic team. Organized in a treatment sequence that mandates multiple clinical and laboratory procedures occur in a timely and coordinated manner, total treatment time can be significantly reduced.

Providing appropriate occlusion and a firmly supported vertical dimension of occlusion, reconstructions using the TEETH IN A DAY protocol (as was used for this patient)can also provide the patient with an improved cosmetic appearance. The benefits of this aspect of therapy cannot be overstated. The psychosocial implications were immediately apparent.

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