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Year : 2015  |  Volume : 1  |  Issue : 2  |  Page : 72-73

A Tale of Impacted Molars: Rare Case Report

Department of Periodontology, Subharti Dental College and Hospital, Meerut, Uttar Pradesh, India

Date of Web Publication17-Dec-2015

Correspondence Address:
D Deepa
Department of Periodontology, Subharti Dental College and Hospital, NH-58, Delhi-Haridwar Bypass Road, Meerut - 250 005, Uttar Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2393-8692.172039

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"Kissing" or "rosetting" of molars is a rare phenomenon which refers to contacting occlusal surfaces of impacted permanent mandibular second, third, and very rarely, a fourth molar. Kissing molars may occur alone or accompanied by other disorders such as mucopolysaccharidosis. Early surgical intervention is essential as this condition could cause serious complications, including the formation of pathologies such as dentigerous cyst or destruction of the adjacent bone. Here, we report a rare case of unilateral impaction of molars with occlusal surfaces facing each other in the lower jaw.

Keywords: Dentigerous cyst, impacted molars, kissing molars, unilateral

How to cite this article:
Deepa D, Gupta C. A Tale of Impacted Molars: Rare Case Report. Indian J Oral Health Res 2015;1:72-3

How to cite this URL:
Deepa D, Gupta C. A Tale of Impacted Molars: Rare Case Report. Indian J Oral Health Res [serial online] 2015 [cited 2023 Mar 27];1:72-3. Available from: https://www.ijohr.org/text.asp?2015/1/2/72/172039

  Introduction Top

An impacted tooth is the one that fails to erupt and will not eventually assume its anatomical arch relationship beyond the chronological eruption date. This may be caused by a physical barrier or ectopic positioning of a tooth. In cases, where the second and third mandibular molars are unerupted, with occlusal surface contacting each other in a single follicular space, with the roots in opposing direction are called "kissing molar" (KM) or "rosette formation." [1] Van Hoff was the first to describe "KMs" in an intellectually challenged, 31-year-old man in 1973. Disturbance in tooth position could be linked with a condition such as mucopolysaccharidosis (MPS), where multiple "resetting" of molars may either as a disease component or an isolated feature as surmised by Nakamura in 1991. [2],[3] The MPS are a rare group of inherited disorders of connective tissue metabolism of which the condition most familiar is Hurler's syndrome known to be associated with excessive mucopolysacharide excretion. Biochemical investigations for MPS involve urinary glycosaminoglycans levels including hyaluronic acid, chondroitin-4-sulfate, heparin sulfate, keratin sulfate, and proteoglycans.

Though some cases of inverted teeth have been reported in the literature, majority of them were located in the maxilla, or erupted in the nasal cavity or the maxillary sinus. In the mandible also, few cases of inverted teeth have been reported but most of them were third molars. [4] The incidence of kissing between third and fourth molar is quite rare, such involvement between second and third molar is relatively more common. [5] KM may be easily diagnosed through radiographic examination. Such conditions require surgical intervention and if ignored could lead to serious complications such as internal or external resorption, pericoronitis, dentigerous cyst or tumors. This case report documents a case of unilateral impaction of the left mandibular second molar and third molar with occlusal surfaces facing each other.

  Case Report Top

A male patient aged 25 years presented to the department of periodontology for a check-up and oral prophylaxis. The patient was systemically healthy. On clinical examination, oral hygiene status was good with mild gingivitis. Hard tissue and soft tissue examination of oral cavity further revealed that second molar on left mandibular arch was missing. Orthopantomograph was advised to the patient to confirm whether the tooth was impacted or congenitally missing. On radiographic examination, it was observed that the second and third molars were impacted with the occlusal surfaces facing each other in the same follicular space in the left lower jaw [Figure 1]. Patient's medical and family history ruled out the possibility of any hereditary etiology. Finding of resetting of molars, in this case, was an isolated feature and not linked with MPS. Hence, biochemical investigations to rule out the association with this disease were not required. The patient was asymptomatic. The need for surgical intervention was discussed with the patient. The patient is under observation. The patient was asymptomatic and also a frequent traveler. Patient desires to get the treatment done after few months.
Figure 1: Orthopantomograph showing impacted kissing molars (second and third molar) in the left mandibular jaw region

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  Discussion Top

Many theories explaining altered tooth position (delayed/noneruption/impaction) have been suggested, but exact etiology is yet to be determined. Impaction is classified based on its position in relation to adjacent teeth such as mesioangular, distoangular, vertical, horizontal, or inverted. Rarely, an interesting pattern of impaction is observed called "KMs." However, previous studies conclude that KMs have association with MPC, dentigerous cyst, or other syndromes. In the literature, there are controversies regarding the difference between unusual impaction and rosetting of molars. It has been suggested that the absence of a contact between the two impacted molars discounts them from being classified as KM. [6],[7]

The literature advocates odontectomy as a decisive form of treatment, even for this unusual impaction. The decision of removal of lower third molar (impacted) in usual position is a surgical challenge. The KM are in the same situation with higher risk of complication; such as mandible fracture during surgery or postoperatory, dry socket and damage to the alveolar nerve. [8] In order to reduce or prevent these complications, prior surgical planning to manage such unusual condition is necessary.

  Conclusion Top

The majority of anomalies are coincidental finding, and KMs is one such condition and also highlights the signs of various medical conditions which may require further investigation. Limited options of treatment are available, either surgical intervention or combination of orthodontic and surgical intervention. However, if more information is provided with new cases better treatment planning could be done to treat such accidental findings.

  References Top

Neto FO, Junior HV, Junior WM, Duarte BG, Salgueiro DG, Sant Ana E. Interesting cases of kissing molars. Report of two cases. Rev Odontol UNESP 2012;41:292-5.  Back to cited text no. 1
van Hoof RF. Four kissing molars. Oral Surg Oral Med Oral Pathol 1973;35:284.  Back to cited text no. 2
Nakamura T, Miwa K, Kanda S, Nonaka K, Anan H, Higash S, et al. Rosette formation of impacted molar teeth in mucopolysaccharidoses and related disorders. Dentomaxillofac Radiol 1992;21:45-9.  Back to cited text no. 3
Deepa D, Mehta DS. An inverted supernumerary tooth in juxtaposition with another supernumerary tooth - A rare case report. J Indian Dent Assoc 2002;74:46-8.  Back to cited text no. 4
Gulses A, Varol A, Sencimen M, Dumlu A. A study of impacted love: Kissing molars. Oral Health Dent Manag 2012;11:185-8.  Back to cited text no. 5
Krishnan B. Kissing molars. Br Dent J 2008;204:281-2.  Back to cited text no. 6
Juneja M. Not kissing. Br Dent J 2008;204:597.  Back to cited text no. 7
Adeyemo WL. Do pathologies associated with impacted lower third molars justify prophylactic removal? A critical review of the literature. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006;102:448-52.  Back to cited text no. 8


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