Feline odontoclastic resorptive lesions

Reiter, Alexander M.; Mendoza, Krista A.

doi:10.1016/s0195-5616(02)00027-x

Cited by 93 publications

(41 citation statements)

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“…It has previously been suggested that there is a need for further microscopic research to differentiate histopathologic findings of FORL from normal anatomy of feline teeth [26]. Several peculiarities can be noted in permanent teeth of cats that could represent separate pathologic entities or be associated with FORL.…”

Section: Peculiarities Of Feline Permanent Teethmentioning

confidence: 99%

Update on the Etiology of Tooth Resorption in Domestic Cats

Reiter

Lewis

Okuda

2005

Veterinary Clinics of North America: Small Animal Practice

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Feline odontoclastic resorptive lesions (FORL) were first recognized and histologically differentiated from caries in the 1920s [1,2]. Some anecdotal reports describing caries-like lesions at the cervical region of feline teeth followed in the 1950s and 1960s, until two microscopic studies in the 1970s again revealed that FORL were not caries but a type of tooth resorption [3,4]. A recent study showed that cats with FORL have a significantly lower urine specific gravity and significantly higher serum concentration of 25-hydroxyvitamin D (25OHD) compared with cats without FORL [5], indicating that multiple tooth resorption in domestic cats could be the manifestation of some systemic insult rather than a local cause. In this article, the histologic and radiographic appearance of FORL and certain other peculiarities of feline teeth are reviewed. An attempt is then made to compare these findings with changes of the periodontium induced by administration of excess vitamin D or vitamin D metabolites in experimental animals. Histologic and radiographic features of feline odontoclastic resorptive lesionsTooth resorption is caused by odontoclasts. Their precursors derive from hematopoietic stem cells of bone marrow or spleen and migrate from blood vessels of the alveolar bone or periodontal ligament toward the external root

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Section: Peculiarities Of Feline Permanent Teethmentioning

confidence: 99%

Update on the Etiology of Tooth Resorption in Domestic Cats

Reiter

Lewis

Okuda

2005

Veterinary Clinics of North America: Small Animal Practice

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“…70(1): 103-105, 2008 Odontoclastic Resorptive Lesions (ORL) is a dental disease which often occurs in middle-aged and older cats. In cats, Odontoclasts which are activated by gingival inflammation resorb the dentin and the lesion is replaced by bony tissue [11]. The resorption begins in the cementum below the gingival margin [11].…”

mentioning

confidence: 99%

“…In cats, Odontoclasts which are activated by gingival inflammation resorb the dentin and the lesion is replaced by bony tissue [11]. The resorption begins in the cementum below the gingival margin [11]. In advanced cases, spontaneous fracture of the tooth crown often occurs [11].…”

mentioning

confidence: 99%

“…The resorption begins in the cementum below the gingival margin [11]. In advanced cases, spontaneous fracture of the tooth crown often occurs [11]. Usually affected cats are asymptomatic, but if the inflammation develops into pulp tissue, the cats may develop severe oral pain [11].…”

mentioning

confidence: 99%

“…In advanced cases, spontaneous fracture of the tooth crown often occurs [11]. Usually affected cats are asymptomatic, but if the inflammation develops into pulp tissue, the cats may develop severe oral pain [11]. Many researchers suggest that the influencing factors may be the gingivitis, foods, mechanical trauma, FIV/FeLV infection and an imbalance of calcium regulating hormones and glucocorticoid, but the exact cause has not been confirmed [10,11].…”

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confidence: 99%

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Odontoclastic Resorptive Lesions in a Dog

Yoshikawa

Watanabe

Ozawa

2008

The Journal of Veterinary Medical Science

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ABSTRACT. We found odontoclastic resorptive lesions on premolars and molars in a 4-year-old miniature dachshund. The teeth had been extracted because the dentin was resorbed. In some teeth, the roots had been replaced by hard tissue, and so we amputated the crowns and curetted roots and alveolar bone. Histopathological examination revealed that the dentin was resorbed by odontoclasts and was replaced with bony tissue. Ten months later we found resorptive lesions in other teeth, and we treated them along with the first treatment. At the time of writing, since this is the first report of a dog with the same lesion in other teeth after the first treatment, we hope to establish better treatment and prevention methods. KEY WORDS: canine, neck lesion, odontoclastic resorptive lesions.J. Vet. Med. Sci. 70(1): 103-105, 2008 Odontoclastic Resorptive Lesions (ORL) is a dental disease which often occurs in middle-aged and older cats. In cats, Odontoclasts which are activated by gingival inflammation resorb the dentin and the lesion is replaced by bony tissue [11]. The resorption begins in the cementum below the gingival margin [11]. In advanced cases, spontaneous fracture of the tooth crown often occurs [11]. Usually affected cats are asymptomatic, but if the inflammation develops into pulp tissue, the cats may develop severe oral pain [11]. Many researchers suggest that the influencing factors may be the gingivitis, foods, mechanical trauma, FIV/FeLV infection and an imbalance of calcium regulating hormones and glucocorticoid, but the exact cause has not been confirmed [10,11]. On the other hand, the pathoetiology of canine ORL is regarded as similar to that of feline ORL [5] and according to one report, root resorption was seen in 17.9% of randomly selected dogs [6] ,but there are not many reports [1,4,8,11]. In this instance, we treated and evaluated histopathologically a case which we diagnosed as ORL. A summary of this case follows.This case was a 4-year-old male miniature dachshund, weighing 5.4 kg. This dog was presented to our hospital to undergo castration and dental cleaning.At the first presentation, the dog was in good general condition and had mild to moderate tartar accumulation and gingivitis. Under general anesthesia, after our routine oral cleaning, we noticed gingival bleeding, redness and swelling in bilateral mandibular third premolars (Fig. 1). There was no retraction of the gingiva. From these findings, we suspected external resorption. Later we examined the dog radiographically and it revealed radiolucent areas around the cervical area of the bilateral mandibular third premolars and first molars. In these teeth, the resorption had reached to the pulp (Fig. 2). Root apex lesions were also suspected in the bilateral mandibular first molars due to the radiolucent area of the apex. Resorption of the alveolar bone was not observed. Based on this, we treated the teeth surgically 205 days after the first presentation. Before the treatment decision, we performed an oral examination again. We found that th...

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The Oral Cavity

Harvey¹

2004

Feline Medicine and Therapeutics

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Feline odontoclastic resorptive lesions

Cited by 93 publications

References 88 publications

Update on the Etiology of Tooth Resorption in Domestic Cats

Update on the Etiology of Tooth Resorption in Domestic Cats

Odontoclastic Resorptive Lesions in a Dog

The Oral Cavity

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