Dental implant-related malpractice claims frequently involve allegations of improper placement, treatment planning deficiencies, and failure to appropriately account for patient-specific risk factors. These cases often present significant defensibility challenges, as adverse outcomes such as implant failure or bone loss may occur even when treatment meets the standard of care.
 
This case highlights the importance of documentation, expert support, and causation analysis in defending implant-related claims. Despite allegations of improper implant placement and treatment complications, the case resulted in a defense verdict following a multi-day jury trial.
 

Claim Case Study

Practitioner: General practitioner dentist (GP)
Claimant: 50-year-old male with a history of mild hypertension and hyperlipidemia
Risk management topics: Patient selection, treatment planning, implant positioning, documentation, expert testimony, and causation defense
 
Facts
The patient presented to a general dental practice and was initially seen by the practice owner (GP owner) for evaluation and restorative dental care. Over the next several years, treatment occurred in phases, including initial restorative work, followed by development and delayed execution of a comprehensive treatment plan involving mandibular dental implants.
 
The patient’s oral health was relatively poor, with partial edentulism and multiple failing restorations that included fillings, crowns, and fixed bridges. Although the periodontal examination revealed mild to moderate pre-existing alveolar bone loss, the condition was stable at the time of the initial exam.
 
Following evaluation, the dentist recommended treatment to replace failing restorations, along with two maxillary extractions. The restorative work took several months to complete. Unfortunately, within two years, the patient experienced recurrent decay on two maxillary bridges and several mandibular restorations. The GP owner developed a new treatment plan when the patient requested a comprehensive approach to improve esthetics, function, and address his ongoing complaints about severe sensitivity with his few remaining lower teeth. The GP owner recommended new maxillary crowns and fixed bridges with a mandibular all-on-four implant supported denture.
 
Due to scheduling challenges, the patient was referred to associate dentists in the practice for this treatment. Records review indicated that responsibility for overall case management remained with the GP owner. One associate (GP associate) completed all maxillary crown and bridge work and was responsible to ensure integration and acceptability of the final upper/lower restorations. The other associate (dentist insured) performed mandibular extractions, placed the dental implants and undertook procedures to complete a lower implant supported denture.
 
Completion of the treatment plan required more than two years. Contributing factors included the patient’s financial challenges and scheduling difficulties.
 
Approximately three years after development of the comprehensive treatment plan and more than a year after implant placement and prosthetic work completion, the patient experienced complications including: alleged progressive bone loss associated with the four lower implants, loosening/instability of the lower denture, and several areas of recurrent decay involving maxillary crown and bridge restorations. At that point, the patient decided to seek an assessment and possible treatment from another dental practice. The new general dentist referred the patient to a periodontist to evaluate the condition of the patient’s remaining maxillary teeth and the mandibular implants. These assessments indicated that several maxillary extractions would be needed, along with replacement of maxillary restorations, the existing mandibular implants, and the lower implant supported denture. 
 
The patient began to move forward with the recommended dental work, and, in parallel, he initiated a malpractice action against the insured dentist and the dentist owner, alleging that implants were improperly placed, causing their early failure and subsequent failure of the mandibular and maxillary restorations.
 
Key Allegations

• Failure to appropriately plan treatment
• Improper implant placement (including spacing, angulation, and sizing)
• Improper/flawed design of implant restoration
• Failure to prevent implant failure and associated bone loss

 
Alleged Injury/Damages

• Progressive bone loss after implant placement
• Failed dental implants
• Corrective surgery, prosthetic revision treatment, and future costs due to the patient’s compromised oral condition
• Pain and suffering
• The initial demand totaled $600,000.

 

Analysis

Plaintiff’s Position
The plaintiff alleged that the implants were placed too close together, of improper size (too short and/or narrow), and not properly angled. The plaintiff’s experts opined that these deficiencies led directly to implant failure and contributed to progressive bone loss, necessitating further treatment. The plaintiff further alleged that failure of the implants and lower denture contributed to instability and early failure of the maxillary restorations, followed by severe decay on several teeth that required extraction.
 
Defense Position
The defense strategy focused on separating adverse outcomes from negligence by emphasizing multifactorial causation. The defense asserted that the implant placement met the applicable standard of care and that the patient’s outcome was primarily attributable to poor overall oral health, a history of documented recurrent decay, inadequate home care, and/or underlying health factors, rather than negligence. Furthermore, the insured dentist was not notified of emerging complications or patient dissatisfaction until the condition had progressed significantly, limiting the opportunity for timely intervention.
 
Expert Support
Both parties presented expert testimony, including specialists in periodontics, implant dentistry and prosthodontics. A case that primarily depends on a “battle of the experts” at trial may be unpredictable at best. In such cases, outcomes are often determined by the clear and understandable presentation of complex clinical issues to a lay jury.
 
The defense team believed that defense expert credentials and depositions were very strong in this case. Furthermore, defense experts presented compelling opinions supporting the appropriateness of implant selection and placement. They effectively challenged the causal link between the mandibular treatment and the alleged injuries, particularly with respect to the claimed injuries in the maxillary arch.
 
Although documentation across the practice was generally substandard, the insured dentist’s records were a relative exception. Based on treatment plan development and the insured dentist’s documentation, defense experts opined that the record supported that the overall responsibility for patient selection and case management belonged to the GP owner and/or the GP associate. Moreover, the insured dentist documented concerns and discussions about home care, recurrent decay and other factors that may lead to premature case failure with the patient, the practice owner, and the GP associate before initiating treatment.
 
Outcome
Prior to trial, the GP owner and his insurance carrier settled for an undisclosed amount. After a failed mediation, the case against the insured dentist proceeded to a jury trial lasting more than a week. Following deliberation, the jury returned a defense verdict, finding that the defendant’s care did not fall below the standard of care and was not the cause of the plaintiff’s injuries.
 
Risk Management Considerations
This case highlights several important risk management principles related to implant dentistry and malpractice defense:

• Treatment Planning and Patient Selection. Comprehensive evaluation of patient-specific risk factors, including bone quality, systemic health, dental history and baseline dental condition, is critical in determining treatment appropriateness. In some cases, consideration of alternative treatment approaches, or deferral of treatment, may result in more favorable outcomes. However, defense experts and ultimately the jury supported the insured dentist’s treatment and decisions. 
• Use of Experts. Early identification and engagement of qualified experts can significantly influence case development, particularly where technical issues are alleged.
• Complication vs. Causation. Not all adverse outcomes, including implant failure, are the result of negligence. Establishing and documenting alternative causation pathways with expert support can be essential to a successful defense.
• Documentation. Clear documentation of treatment planning, implant selection and positioning rationale, and patient discussions strengthen defensibility, particularly in cases involving technical allegations.