Microbiological Treatment Philosophy

Endodontic Treatment (Vital/Non-Infected Teeth)

Dr. Soucie received his master’s thesis for his study of bacterial penetration of tooth structure. Vital teeth exhibiting irreversibly inflammation of the pulp (Ex. Lingering to hot/ cold) can be treated in a single visit due to the presence of intact blood and lymph vessels, primary components of our immune response that fights infections.

Microbiological Treatment

Necrotic teeth no longer possess viable pulp tissue to remove bacteria and become infected. Medicine is placed inside the tooth and left for several weeks. This works in concert with your immune system, facilitating bone healing which is requisite for completion of your treatment at Evolution Endodontics. 

Left: Lateral, furcal and apical bone loss (11mm W x 13mm T x 8mm D) associated with bacterial infection and deemed non-restorable due to suspected fracture and poor periodontal prognosis
Right: Minimally invasive access to preserve tooth structure (Truss/ H-shaped access) with bone remineralization/ healing following microbiological protocol

Endodontic Retreatment

Retreatment of failed root canals is due to bacteria presence, missed anatomy and incomplete removal of necrotic tissue. Therefore, the same microbiological protocol used on necrotic teeth is utilized to ensure increased treatment predictability and long term success. 

Left: Missed canals retain resulted in periapical and lateral bone loss(18mm W x 22mm x 8mm D), spreading into the adjacent soft tissue

Right: Complete resolution of the lesion following microbiological protocol without need for apical surgery

Extraction/Socket Conversion

CT scans reveal accurate bone loss, fracture and internal anatomy. Non-restorable teeth are surgically extracted, bone graft and membranes are placed to facilitate eventual implant placement when desired. A follow up CT is taken 4 months later to ensure proper healing for implant placement. CT scans are sent to the appropriate party for implant placement and restorative therapy.

Dental Trauma

Replacement of displaced and avulsed (Knocked out) teeth and splinting of loose teeth. Root canal therapy and any required adjunctive therapy, such as the placement of posts and cores are performed. Crowns, when indicated, are performed by you general dentist or prosthodontist.

Top: Maxillary bone/ alveolus fracture and .8 cm displacement of central incisors following blunt trauma

Bottom: Results following CT imaging, repositioning of the bone, teeth and soft tissue, splinting, endodontic therapy

Resorption Therapy

Root resorption therapy is a viable treatment to eliminate the pathological process that results in the progressive loss of dentin and cementum by the action of osteoclasts. If left unnoticed or untreated, the resorptive lesion progresses and the affected teeth become non-salvagable and must be extracted

Left: Class III ECIR (Extra canal invasive resorption) of the root

Right: CT imaging following endodontic therapy, resorption therapy and placement of the definitive restoration

Core & Post/Core

A core is a type of dental restoration required to permanently restore an endodontically treated tooth when sufficient amounts of sound tooth structure remain to retain a conventional crown. A post and core is a type of dental restoration required when inadequate amounts of sound tooth tissue remain to retain a conventional crown. A post is cemented or bonded into a prepared root canal to retain a core restoration, enabling cementation and retention of the final crown. The post is analogous to rebar in concrete.

Left:  Over-sized access and instrumentation of canal, unnecessarily removing tooth structure responsible for the long term structural integrity of the tooth

Right:  Minimally invasive access, preserving tooth structure w/ post and core placement to reinforce the tooth following trauma

Root Resection/Amputation

Root amputation is a viable treatment to retain a functional portion of the tooth. Root amputation (root resection) is the surgical removal of all the root and adherent soft tissues leaving the crown of the tooth intact and supported by remaining root(s).

Left: Extent of periodontal involvement precluded access to effectively remove active infection and bone grafting

Right: Results following endodontic therapy, definitive restoration and removal of the distobuccal root


An apicoectomy is performed to eliminate the root end and associated infection, preserving the function of the tooth whilst avoiding extraction. This treatment is only considered when a root canal has failed and removal of restorative material, such as cast posts and crowns, would result in loss of the tooth.

Left: Cast post, core and crown restoration precluded orthograde retreatment with microbiological protocol due to the anticipated structural failure and loss of the tooth

Right: Root end resection and retrograde MTA filling is rarely performed in our office due to the inability to debride the affected canal space

Internal bleaching

Internal bleaching is a conservative means of managing discoloured teeth. The primary indication for internal bleaching is intrinsic (internal) discolouration , resulting from such things as trauma and bacteria. Contrary to external bleaching, internal bleaching is performed to brighten your teeth from the inside out. The objective of an internal bleaching lies in the removal of the tooth discoloration without sacrificing any hard tooth substance.

Top: Blunt trauma resulted in maxillary facial bone fracture, lateral luxation, horizontal enamel fractures and discoloration

Bottom: Result following endodontic therapy with microbiological protocol, internal bleaching and post/ core restoration

Crown Lengthening

During the dental crown lengthening procedure, excess gum and bone tissue is reshaped to expose more of the natural tooth. Perhaps your tooth is decayed, broken below the gum line, or has insufficient tooth structure for a restoration, such as a crown or bridge. Crown lengthening adjusts the gum and bone level to expose more of the tooth so it can be restored. This indication is consistent with the localized crown lengthening procedure that would be completed in addition to your restorative and endodontic procedures.

Left: Extensive decay extending subgingivally, proximal to the bone, and into the dental pulp

Right: Result following caries removal, crown lengthening, endodontic therapy and core build-up

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